S00ubifs

#!/bin/sh

# SPDX-License-Identifier: WTFPL
#
# Copyright (C) 2020-2024 Entware team

### colors
ansi_std="\033[0;0m"
ansi_red="\033[1;31m"
ansi_green="\033[1;32m"
ansi_yellow="\033[1;33m"
ansi_cyan="\033[1;36m"
ansi_white="\033[1;37m"

### columns
COLUMNS="45"

### commands
ACTION="$1"

### dirs
TMP_DIR="/opt/tmp"
LOG_DIR="/opt/var/log"
RUN_DIR="/opt/var/run"

### service
ENABLED=yes
DESC="UBIFS"

### paths
PATH="/opt/bin:/opt/sbin:/opt/usr/bin:/opt/usr/sbin"

DIR="$TMP_DIR $LOG_DIR $RUN_DIR"

mode_size() {
SIZE="1M"
MODE="1755"
if [ "$d" = "$TMP_DIR" ]; then
  SIZE="20M"
  MODE="1777"
elif [ "$d" = "$LOG_DIR" ]; then
  SIZE="10M"
fi
}

do_check() {
  printf "$ansi_white %-${COLUMNS}s $ansi_std" "Checking the mount points ..."

  if [ "$ENABLED" = "no" ]; then
    printf "$ansi_cyan %-${COLUMNS}s $ansi_std\n" "autorun disabled."
  elif [ "$ACTION" = "start" ]; then
    for d in $DIR; do
      if grep -qs "$d" /proc/mounts; then
        printf "$ansi_yellow %-${COLUMNS}s $ansi_std\n" "$d already mounted."
      else
        printf "$ansi_red %-${COLUMNS}s $ansi_std\n" "$d not mounted."
      fi
    done
  elif [ "$ACTION" = "reload" ] || [ "$ACTION" = "restart" ]; then
    printf "$ansi_yellow %-${COLUMNS}s $ansi_std\n" "\"$ACTION\" not supported."
  else
    for d in $DIR; do
      if grep -qs "$d" /proc/mounts; then
        printf "\n$ansi_white %-${COLUMNS}s $ansi_std$ansi_yellow %-${COLUMNS}s $ansi_std" "$d" "already mounted."
      else
        printf "\n$ansi_white %-${COLUMNS}s $ansi_std$ansi_red %-${COLUMNS}s $ansi_std" "$d" "not mounted."
      fi
    done
    printf "\n"
  fi
}

do_start() {
  [ "$ENABLED" = "yes" ] || return 1

  for d in $DIR; do
    mode_size
    printf "$ansi_white %-${COLUMNS}s $ansi_std" "Mounting $d ..."
      if grep -qs "$d" /proc/mounts; then
        printf "$ansi_yellow %-${COLUMNS}s $ansi_std\n" "already mounted."
        continue || return 0
      else
        if mount -t tmpfs -o size="$SIZE",mode="$MODE" tmpfs "$d"; then
          printf "$ansi_green %-${COLUMNS}s $ansi_std\n" "done."
          continue || return 0
        else
          printf "$ansi_red %-${COLUMNS}s $ansi_std\n" "failed."
          continue || return 1
      fi
    fi
  done
}

do_stop() {
  [ "$ENABLED" = "yes" ] || return 1

  for d in $DIR; do
    printf "$ansi_white %-${COLUMNS}s $ansi_std" "Unmounting $d ..."
      if ! grep -qs "$d" /proc/mounts; then
        printf "$ansi_red %-${COLUMNS}s $ansi_std\n" "not mounted."
        continue || return 0
      else
        if umount "$d"; then
          printf "$ansi_green %-${COLUMNS}s $ansi_std\n" "done."
          continue || return 0
        else
          printf "$ansi_red %-${COLUMNS}s $ansi_std\n" "failed."
          continue || return 1
      fi
    fi
  done
}

do_enable() {
  printf "$ansi_white %-${COLUMNS}s $ansi_std" "Enabling autorun $DESC ..."
  if [ "$ENABLED" = "no" ]; then
    sed -i 's,^ENABLED=no,ENABLED=yes,' "$0"
    printf "$ansi_green %-${COLUMNS}s $ansi_std\n" "done."
  else
    printf "$ansi_yellow %-${COLUMNS}s $ansi_std\n" "already enabled."
  fi
  return 0
}

do_disable() {
  printf "$ansi_white %-${COLUMNS}s $ansi_std" "Disabling autorun $DESC ..."
  if [ "$ENABLED" = "yes" ]; then
    sed -i 's,^ENABLED=yes,ENABLED=no,' "$0"
    printf "$ansi_green %-${COLUMNS}s $ansi_std\n" "done."
  else
    printf "$ansi_yellow %-${COLUMNS}s $ansi_std\n" "already disabled."
  fi
  return 0
}

case "$1" in
    start)
        { do_check > /dev/null && do_start ; } || do_check
    ;;
    kill|stop)
        { do_check > /dev/null && do_stop ; } || do_check
    ;;
    check|reload|restart|status)
        do_check
    ;;
    enable)
        do_enable
    ;;
    disable)
        "$0" stop > /dev/null 2>&1 && do_disable
    ;;
    *)
        printf "$ansi_white %-${COLUMNS}s %-${COLUMNS}s $ansi_std\n" "Usage: $0" "{start|[kill|stop]|[check|status]}"
        exit 1
    ;;
esac

exit 0