140 lines
4 KiB
Bash
Executable file
140 lines
4 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2023 JELOS (https://github.com/JustEnoughLinuxOS)
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. /etc/profile
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. /etc/os-release
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UPDATE_ROOT="/storage/.update"
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MOUNT_GAMES=$(get_setting system.automount)
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GAMES_DEVICE=$(get_setting system.gamesdevice)
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MOUNT_PATH="/storage/games-external"
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OVERLAY_PATH="/storage/roms"
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start_overlay() {
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if [ -e "/storage/.overlay_unsupported" ]
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then
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# If we're not using the overlay, bind mount the external storage path
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# so we don't need to change any configs.
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grep ${MOUNT_PATH} /proc/mounts >/dev/null 2>&1
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if [ ! $? = 0 ]
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then
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MOUNT_PATH="/storage/games-internal"
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fi
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log $0 "Executing bind mount of ${MOUNT_PATH} to ${OVERLAY_PATH}"
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mount --bind ${MOUNT_PATH} ${OVERLAY_PATH}
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exit 0
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else
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log $0 "Enabling overlay."
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systemctl enable storage-roms.mount >/dev/null 2>&1
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systemctl start storage-roms.mount >/dev/null 2>&1
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fi
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}
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if [[ ! "${MOUNT_GAMES}" =~ [0-9] ]]
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then
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set_setting system.automount 1
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elif [[ "${MOUNT_GAMES}" == "0" ]]
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then
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start_overlay
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exit 0
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fi
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function load_modules() {
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for MODULE in exfat vfat
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do
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lsmod | grep ${MODULE} 2>/dev/null
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if [ ! $? = 0 ]
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then
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log $0 "Loading ${MODULE}."
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modprobe ${MODULE} 2>/dev/null
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fi
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done
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}
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function mount_games() {
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FSTYPE=$(blkid -o export ${1} | awk 'BEGIN {FS="="} /TYPE/ {print $2}')
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case ${FSTYPE} in
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ext4)
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log $0 "Found supported partition for overlayfs."
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if [ -e "/storage/.overlay_unsupported" ]
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then
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rm -f /storage/.overlay_unsupported
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fi
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touch /storage/.overlay_supported
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set_setting system.merged.storage 1
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;;
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*)
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log $0 "Partition does not support overlayfs, disabling."
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if [ -e "/storage/.overlay_supported" ]
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then
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rm -f /storage/.overlay_supported
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fi
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touch /storage/.overlay_unsupported
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;;
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esac
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if [ ! -d "${MOUNT_PATH}" ]
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then
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log $0 "Create directory ${MOUNT_PATH}"
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/usr/bin/busybox mkdir -p ${MOUNT_PATH} >/dev/null 2>&1
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fi
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NULL=$(cat /proc/mounts | grep -v -e "/var/media" 2>/dev/null | grep ${1})
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if [ ! "$?" = "0" ] && \
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[ -e "${1}" ] && \
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[ ! -e "/storage/.please_resize_me" ]
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then
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### Udevil shouldn't mount it this early, but just in-case.
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umount /var/media/* 2>/dev/null
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log $0 "Checking filesystem ${1}."
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fsck -Mly ${1} >/dev/null 2>&1
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log $0 "Mounting ${1} on ${MOUNT_PATH}"
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/usr/bin/busybox mount ${1} ${MOUNT_PATH} >/dev/null 2>&1
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fi
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start_overlay
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}
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find_games() {
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if /usr/bin/busybox mountpoint -q /storage ; then
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for DEV in $(for dev in mmcblk[0-9] sd[a-z] nvme[0-9]; do blkid | grep ${dev} | awk 'BEGIN {FS=":"}; /ext4/ || /fat/ {print $1}' | sort -r; done)
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do
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ROOTDEV=$(echo ${DEV} | sed -e "s#^/.*/##g" -e "s#p[0-9].*\$##g")
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SIZE=$(awk '/'${ROOTDEV}'$/ {print $3}' /proc/partitions)
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if (( ${SIZE} <= 8388608 ))
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then
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log $0 "Device ${ROOTDEV} is too small, ignoring."
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# We don't want to mount partitions smaller than ~8GB.
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continue
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fi
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if [ -L "/sys/class/block/${ROOTDEV}boot0" ]
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then
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log $0 "Device ${ROOTDEV} might be Android, ignoring."
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# Assume this is an android boot device and ignore it.
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continue
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fi
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# Udevil might mount it, and we shouldn't care if it does.
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NULL=$(cat /proc/mounts | grep -v -e "/var/media" 2>/dev/null | grep ${DEV})
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if [ ! "$?" = "0" ] && \
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[ -e "${DEV}" ] && \
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[ ! -e "/storage/.please_resize_me" ]
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then
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GAMES_DEVICE=${DEV}
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log $0 "Found ${DEV} available to mount."
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mount_games "${DEV}"
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break
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fi
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done
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# If we're here there is no external storage to use, but we want to start the overlay anyway.
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start_overlay
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fi
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}
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load_modules
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if [ -e "${GAMES_DEVICE}" ]
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then
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mount_games ${GAMES_DEVICE}
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else
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find_games
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fi
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