[root@Jolla nemo]# df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                 14G  5.0G  8.3G  38% /
/dev/mmcblk0p28        14G  5.0G  8.3G  38% /
devtmpfs              406M   64K  406M   1% /dev
tmpfs                 407M   72K  407M   1% /dev/shm
tmpfs                 407M   34M  373M   9% /run
tmpfs                 407M     0  407M   0% /sys/fs/cgroup
tmpfs                 407M  8.0K  407M   1% /tmp
/dev/mmcblk0p25       8.0M  4.2M  3.8M  54% /persist
/dev/mmcblk0p19       8.0M  4.1M  3.9M  52% /drm
/dev/mmcblk0p9         48M  8.3M   40M  18% /var/systemlog
/dev/mmcblk0p18        64M   45M   20M  70% /firmware
/dev/mmcblk0p28        14G  5.0G  8.3G  38% /swap
/dev/mmcblk0p28        14G  5.0G  8.3G  38% /home
tmpfs                 407M     0  407M   0% /mnt/asec
tmpfs                 407M     0  407M   0% /mnt/obb
/dev/mmcblk1           60G  288K   56G   1% /run/user/100000/media/sdcard
[root@Jolla nemo]#

#!/bin/bash

SDCARD=/dev/sdcard
DEF_UID=$(grep "^UID_MIN" /etc/login.defs |  tr -s " " | cut -d " " -f2)
DEF_GID=$(grep "^GID_MIN" /etc/login.defs |  tr -s " " | cut -d " " -f2)
DEVICEUSER=$(getent passwd $DEF_UID | sed 's/:.*//')
MNT=/run/user/$DEF_UID/media/sdcard

if [ "$ACTION" = "add" ]; then
	if [ -b /dev/mmcblk1p1 ]; then
		ln -sf /dev/mmcblk1p1 $SDCARD
	elif [ -b /dev/mmcblk1 ]; then
		ln -sf /dev/mmcblk1 $SDCARD
	else 
		exit $?
	fi	
	su $DEVICEUSER -c "mkdir -p $MNT"
	case "${ID_FS_TYPE}" in
		vfat|ntfs|exfat)
			mount $SDCARD $MNT -o uid=$DEF_UID,gid=$DEF_GID
			;;
		*)
			mount $SDCARD $MNT
			chown $DEVICEUSER: $MNT
			;;
	esac
else
	umount $SDCARD

	if [ $? = 0 ]; then
		rm -f $SDCARD
	else
		umount -l $MNT
		rm -f $SDCARD
	fi
fi