From bb57e8ef3e5b76bf5ab68fcf1348ce51f0baa617 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@cryptonomic.net>
Date: Tue, 2 Mar 2021 16:50:47 -0500
Subject: simplify samizdat-eject.sh

---
 src/initrd/samizdat-eject.sh | 102 +------------------------------------------
 1 file changed, 2 insertions(+), 100 deletions(-)

diff --git a/src/initrd/samizdat-eject.sh b/src/initrd/samizdat-eject.sh
index a950ec5..fcb808d 100755
--- a/src/initrd/samizdat-eject.sh
+++ b/src/initrd/samizdat-eject.sh
@@ -1,102 +1,4 @@
 #!/bin/sh
-die()
-{
-    printf '%s\n' "$*" >&2
-    exit 1
-}
+[ "$(id -u)" = 0 ] || exec sudo $0 "$@"
 
-btrfs_subdevices()
-{
-    local mountpoint="$1"
-    btrfs filesystem show "$mountpoint" | sed -ne 's/^[ \t]*devid.* path //p'
-}
-
-btrfs_subdevice_count()
-{
-    btrfs_subdevices "$1" | wc -l
-}
-
-remove()
-{
-    for dev; do
-        (set -x; btrfs device remove "$dev" /)
-        dmsetup remove "$dev" 2>/dev/null
-        losetup -D
-    done
-}
-
-dm_name()
-{
-    dmsetup info "$1" | sed -ne 's/^Name: *//p'
-}
-
-md_ready()
-{
-    local mountpoint="$1" count dev
-    count=$(mdadm_subdevices /dev/md55|wc -l)
-    [ "$count" = 1 ] || return
-    dev=$(mdadm_subdevices /dev/md55)
-    [ "$(dm_name "$dev")" = samizdatiso ]
-}
-
-copy()
-{
-    temp_target=$(mktemp --tmpdir=/outerfs)
-    mdadm_copy_eject_crypt /dev/md55 "$temp_target"
-}
-
-. mdadm-dup.sh || exit 1
-
-target=$1
-
-if [ ! "$target" ] && mountpoint -q /srv && [ ! -e /srv/samizdat.iso ]; then
-    target=/srv/samizdat.iso
-fi
-
-[ "$target" ] || die "Usage: $0 <target filename>"
-[ ! -e "$target" ] || die "Error: file exists: $target"
-
-if ! mountpoint -q /outerfs; then
-    die "Error: /outerfs is not a mountpoint.  Please mount a safe filesystem to temporarily store the ISO on /outerfs"
-fi
-
-devices=$(btrfs_subdevices /) || exit 1
-
-set --
-seen=
-for dev in $devices; do
-    [ -b "$dev" ] || exit 1
-    case "$dev" in
-        /dev/mapper/loop*) set -- "$@" "$dev" ;;
-        /dev/mapper/samizdatcrypt) seen=y ;;
-    esac
-done
-[ "$seen" ] || set -- # avoid messing up someone's btrfs!
-
-
-
-
-
-
-if ! md_ready; then
-    copy &
-fi
-
-remove "$@"
-
-echo 'Waiting while boot medium is freed...' >&2
-wait
-
-notified=
-while true; do
-    if [ "$(btrfs_subdevice_count /)" = 1 ] && md_ready; then
-        if [ -z "$notified" ]; then
-            echo 'Boot medium is free.  It may be ejected now.' >&2
-            notified=y
-        fi
-        mdadm_copy_eject /dev/md55 "$target".part &&
-            mv "$target".part "$target"
-        exit
-    fi
-    sleep 5
-done
+btrfs device remove 1 2 /
-- 
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