1 files changed, 40 insertions, 0 deletions
diff --git a/bin/.bin/cryptdir b/bin/.bin/cryptdir
new file mode 100755
index 0000000..eb63300
--- /dev/null
+++ b/bin/.bin/cryptdir
@@ -0,0 +1,40 @@
+#!/bin/sh
+set -eu
+set -o pipefail
+
+if [ -e /dev/mapper/cryptdir ]; then
+    echo "only one instance can run at a time" 1>&2
+    exit 1
+fi
+
+sudo -v || exit 1
+
+if [ -z "${1:-}" ]; then
+    size='16M'
+else
+    size=$1
+fi
+
+cryptfile=$(mktemp)
+cryptdir=$(mktemp -d)
+pass=$(dd if=/dev/urandom bs=1 count=80 | base64)
+
+cleanup() {
+    set +e
+    cd
+    sudo umount "$cryptdir"
+    sudo cryptsetup close cryptdir
+    rm -f "$cryptfile"
+    rmdir "$cryptdir"
+}
+
+trap cleanup EXIT
+
+dd if=/dev/urandom of="$cryptfile" bs="$size" count=1
+echo "$pass" | sudo cryptsetup luksFormat "$cryptfile" -
+echo "$pass" | sudo cryptsetup open "$cryptfile" cryptdir --key-file -
+sudo mkfs.ext2 /dev/mapper/cryptdir
+sudo mount /dev/mapper/cryptdir "$cryptdir"
+sudo chown "$USER" "$cryptdir"
+cd "$cryptdir"
+$SHELL