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76 lines
1.6 KiB
76 lines
1.6 KiB
#!/bin/bash
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sudo echo ">>> Initialising"
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METADIR=/tmp/.$USER-etemp
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MOUNTPOINT=~/etemp
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VOLNAME=etemp
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if [[ ! -d "$METADIR" ]]; then
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mkdir "$METADIR"
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fi
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if stat /dev/mapper/$VOLNAME &> /dev/null; then
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echo "ERROR: /dev/mapper/$VOLNAME already exists. Please close the volume first."
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exit 1
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fi
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if [[ `id -u` == 0 ]]; then
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echo "WARNING: Running as root? This might not be what you want."
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fi
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if [[ -d "$MOUNTPOINT" ]]; then
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rmdir "$MOUNTPOINT" || { echo "ERROR: Mount point $MOUNTPOINT is not empty"; exit 1; }
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fi
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mkdir "$MOUNTPOINT" || { echo "ERROR: Could not create mountpoint at $MOUNTPOINT"; exit 1; }
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if [[ -f "$METADIR/image" ]]; then
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echo "WARNING: Image already exists"
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read -p "Create anyway (y/N)? " -n 1 -r
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echo
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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rm "$METADIR/image" || exit 1
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else
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echo "Doing nothing."
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exit 0
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fi
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fi
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SIZE=$1
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if [[ ! "$SIZE" =~ ^[0-9]+[KkMmGg]?$ ]]; then
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SIZE=1G
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echo "WARNING: Size not provided, going with default ($SIZE)"
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fi
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echo ">>> Generating key"
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KEY=$(dd if=/dev/urandom bs=3 status=none count=256 | base64)
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echo "Will create container $METADIR/image and mount /dev/mapper/$VOLNAME at $MOUNTPOINT"
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read -p "Is this okay (y/N)? " -n 1 -r
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echo
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[[ $REPLY =~ ^[Yy]$ ]] || exit 1
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echo ">>> Creating container"
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fallocate -l $SIZE "$METADIR/image"
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echo ">>> Formatting container"
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echo $KEY | sudo cryptsetup luksFormat "$METADIR/image" -d -
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echo $KEY | sudo cryptsetup luksOpen "$METADIR/image" $VOLNAME -d -
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echo ">>> Creating filesystem"
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sudo mkfs.ext4 /dev/mapper/$VOLNAME
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echo ">>> Mounting volume to $MOUNTPOINT"
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sudo mount /dev/mapper/$VOLNAME "$MOUNTPOINT"
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sudo chown `whoami` "$MOUNTPOINT"
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echo "Done."
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