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#!/usr/bin/env bash
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#
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# Author: Dmitry Razumov <asmeron@ublinux.com>
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# Copyright (c) 2021-2025 UBLinux <support@ublinux.com>
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#
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# Initial script for UBLinux
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# This script are launching before starting init from initrd script
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# Current dir allways must be set to root (/)
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# All system path must be relative, except initrd dirs
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ENABLED=yes
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[[ ${ENABLED} == "yes" ]] || exit 0
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DEBUGMODE=no
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[[ -d /usr/lib/ublinux ]] && { ROOTFS= ; CMD_CHROOT= ; } || { [[ -d /sysroot ]] && ROOTFS="/sysroot" || ROOTFS="."; CMD_CHROOT="chroot ${ROOTFS}"; }
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SOURCE=${ROOTFS}/usr/lib/ublinux/functions; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
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SOURCE=${ROOTFS}/usr/lib/ublinux/default; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
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debug_mode "$0" "$@"
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SYSCONF="${ROOTFS}${SYSCONF}"
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SOURCE=${SYSCONF}/config; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
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SOURCE=${SYSCONF}/save; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
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## Удалить указанные изменения, после очистки параметр удаляется
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## SAVE_CLEAN=all|changes,rootcopy,homes
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## all # Удалить все изменения из /ublinux-data/changes/ /ublinux-data/rootcopy/ /ublinux-data/homes/
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## changes # Удалить только системные изменения /ublinux-data/changes/
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## rootcopy # Удалить только /ublinux-data/rootcopy/
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## homes # Удалить только /ublinux-data/homes/
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## SAVE_CLEAN=changes,rootcopy
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exec_save_clean(){
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find_path_changes(){
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PATH_CHANGES=$(find /memory/layer-base/*/ -maxdepth 1 -type d -name "${NAME_CHANGES}" | head -1)
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[[ -n ${PATH_CHANGES} ]] || PATH_CHANGES="$(find /memory/layer-base/*/ -maxdepth 1 -type f -name "ublinux-data*.sgn" | head -1)"
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[[ -n ${PATH_CHANGES} ]] && PATH_CHANGES="${PATH_CHANGES%/*}/${NAME_CHANGES}" || return 1
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}
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find_path_rootcopy(){
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PATH_ROOTCOPY=$(find /memory/layer-base/*/ -maxdepth 1 -type d -name "${NAME_ROOTCOPY}" | head -1)
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[[ -n ${PATH_ROOTCOPY} ]] || PATH_ROOTCOPY="$(find /memory/layer-base/*/ -maxdepth 1 -type f -name "ublinux-data*.sgn" | head -1)"
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[[ -n ${PATH_ROOTCOPY} ]] && PATH_ROOTCOPY="${PATH_ROOTCOPY%/*}/${NAME_ROOTCOPY}" || return 1
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}
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find_path_homes(){
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PATH_HOMES=$(find /memory/layer-base/*/ -maxdepth 1 -type d -name "${NAME_HOMES}" | head -1)
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[[ -n ${PATH_HOMES} ]] || PATH_HOMES="$(find /memory/layer-base/*/ -maxdepth 1 -type f -name "ublinux-data*.sgn" | head -1)"
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[[ -n ${PATH_HOMES} ]] && PATH_HOMES="${PATH_HOMES%/*}/${NAME_HOMES}" || return 1
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}
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clean_changes(){
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find ${PATH_CHANGES}/{..?*,.[!.]*,*} -delete 2>/dev/null
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NEED_REBOOT=yes
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}
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clean_rootcopy(){
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find ${PATH_ROOTCOPY}/{..?*,.[!.]*,*} -delete 2>/dev/null
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NEED_REBOOT=yes
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}
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clean_homes(){
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find ${PATH_HOMES} -maxdepth 2 -type d -name ".config" | while read -r PATH_USER_HOME; do
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find ${PATH_USER_HOME%/*} -delete 2>/dev/null
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done
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}
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clean_home_root(){
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find ${PATH_CHANGES} -maxdepth 1 -type d -name "root" | while read -r PATH_USER_HOME; do
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find ${PATH_USER_HOME} -delete 2>/dev/null
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done
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}
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# Если задан парметр, то использовать как значение
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CMDLINE_SAVE_CLEAN=$(cmdline_value save_clean)
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[[ -z ${CMDLINE_SAVE_CLEAN} ]] || SAVE_CLEAN=${CMDLINE_SAVE_CLEAN}
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local NEED_REBOOT=
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if [[ -n ${SAVE_CLEAN} ]]; then
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local NAME_CHANGES="changes"
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local NAME_ROOTCOPY="rootcopy"
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local NAME_HOMES="homes"
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#local PATH+=":${ROOTFS}/usr/bin"
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PATH_DATA="$(find /memory/layer-base/*/ -maxdepth 1 -type f -name "ublinux-data*.sgn" | head -1)"
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[[ -e ${PATH_DATA%/*}/ublinux.ini ]] && sed "/^SAVE_CLEAN=.*/d" -i ${PATH_DATA%/*}/ublinux.ini
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[[ -e ${SYSCONF}/save ]] && sed "/^SAVE_CLEAN=.*/d" -i ${SYSCONF}/save
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[[ ${SAVE_CLEAN} =~ .*(all|changes).* ]] && find_path_changes && clean_changes
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[[ ${SAVE_CLEAN} =~ .*(all|rootcopy).* ]] && find_path_rootcopy && clean_rootcopy
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[[ ${SAVE_CLEAN} =~ .*(all|homes).* ]] && find_path_homes && clean_homes
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[[ ${SAVE_CLEAN} =~ .*(all|homes).* ]] && find_path_changes && clean_home_root
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sync; sync; sync; echo 3 > /proc/sys/vm/drop_caches
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fi
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[[ -z ${NEED_REBOOT} ]] || poweroff --force --reboot
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}
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################
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##### MAIN #####
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################
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# Если файл подключен как ресурс с функциями, то выйти
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return 0 2>/dev/null && return 0
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exec_save_clean $@
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