108 lines
2.2 KiB
Bash
108 lines
2.2 KiB
Bash
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#!/bin/bash
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#create or delete volatile homedir for a guest-session depending wheter btrfs is available or not.
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BTRFS="/bin/btrfs"
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RSYNC="/usr/bin/rsync"
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MKDIR="/bin/mkdir"
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RM="/bin/rm"
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CHOWN="/bin/chown"
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action=$1
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uid=$2
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gid=$(/usr/bin/id -g $uid)
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skel=/etc/skel
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skeldir=$(dirname $skel)
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uname=$(/usr/bin/id -u -n $uid)
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uskel=/etc/skel${uname}
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home=$(getent passwd $uid | cut -d: -f6)
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homedir=$(dirname $home)
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check_btrfs () {
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FS=$(stat -f --format=%T "$1" 2>/dev/null )
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if [ "$FS" = "btrfs" ]; then
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return 0
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else
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return 1
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fi
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}
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check_btrfs_subvolume () {
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FS=$(stat --format=%i "$1" 2>/dev/null )
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if [ $FS -eq 256 ]; then
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return 0
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else
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return 1
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fi
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}
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delete_home () {
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if [ -d "$home" ]; then
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if check_btrfs_subvolume "$home"; then
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$BTRFS subvolume delete -c "$home"
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else
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$RM -rf "$home"
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fi
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fi
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return 0
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}
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create_home () {
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if check_btrfs "$uskel"; then
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if check_btrfs "$homedir"; then
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if check_btrfs_subvolume "$uskel"; then
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$BTRFS subvolume snapshot "$uskel" "$home"
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else
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$BTRFS subvolume create "$home"
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$RSYNC -a "$uskel/" "$home"
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fi
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else
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$MKDIR "$home"
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$RSYNC -a "$uskel/" "$home"
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fi
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else
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if check_btrfs "$homedir"; then
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$BTRFS subvolume create "$home"
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else
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$MKDIR "$home"
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fi
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$RSYNC -a "$uskel/" "$home"
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fi
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$CHOWN -R ${uid}:${gid} $home
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}
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create_skel () {
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if [ -d "$uskel" ]; then
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return 0
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else
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if check_btrfs "$skeldir"; then
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if check_btrfs_subvolume "$skel"; then
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$BTRFS subvolume snapshot "$skel" "$uskel"
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else
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$BTRFS subvolume create "$uskel"
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$RSYNC -a "$skel/" "$uskel"
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fi
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else
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$MKDIR "$uskel"
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$RSYNC -a "$skel/" "$uskel"
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fi
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fi
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return 0
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}
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case $action in
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create)
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create_skel
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delete_home
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create_home
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;;
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delete)
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delete_home
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;;
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*)
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exit 1
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;;
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esac
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