vmdk-umount

#!/bin/sh

# UnMount partitions in vmdk file
#
# SPDX-License-Identifier: MIT
#

# Read the arguments to variables
#
# $1: mount point

mount_point=$1

# Get the abs path of the mount_point
#
mount_point=`readlink -f $mount_point`

# check if the mount_point is a directory
#
if [ ! -d $mount_point ]; then
    echo "Error: $mount_point is not a directory"
    exit 1
fi

# 1. get the output of mount command and grep the mount_point
# The device mappger
dev_mapper=$(mount | grep $mount_point | awk '{print $1}')

# check if dev_mapper is empty
#
if [ -z "$dev_mapper" ]; then
    echo "Error: $mount_point is not mounted"
    exit 1
fi

sudo umount $mount_point

# 1. get the output of command 'cryptsetup status $dev_mappger'
# 2. Find the line starts with string '\s+loop:'
# 3. get the loop device
#
loop_dev=$(sudo cryptsetup status $dev_mapper | grep -P '\s+device:'| awk '{print $2}')
flat=$(sudo cryptsetup status $dev_mapper | grep -P '\s+loop:'| awk '{print $2}')

echo "$loop_dev"
echo "$flat"

echo "Now close $dev_mapper"
sudo cryptsetup close $dev_mapper

echo "Now detach the loop device "
sudo losetup -d $loop_dev

# wait for the loop device to be detached
#
sleep 1



# get the output of command 'losetup -O name' and check if loop_dev is in the output
#   if yes, then the loop device is still attached
#   if no, then the loop device is detached
#
if [ -n "$(losetup -O name | grep $loop_dev)" ]; then
    echo "detach ${loop_dev} fails"
    exit 1
else
    echo "detach ${loop_dev} successfully"
fi


echo "Now vmware-mount unmount the flat "
# Get the output of command 'sudo vmware-mount -L' and grep the flat
#
vmdk_file=$(sudo vmware-mount -L | grep $flat | awk '{print $1}')

echo "Find vmdk ${vmdk_file}"

sudo vmware-mount -k ${vmdk_file}