From ea8e80b3b4d49a18441ce08157badad7fdc120de Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@cryptonomic.net>
Date: Sun, 17 Jan 2021 15:26:39 -0500
Subject: old changes, unreviewed

---
 src/partvi | 48 ++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 4 deletions(-)

diff --git a/src/partvi b/src/partvi
index b9efe18..6c65104 100755
--- a/src/partvi
+++ b/src/partvi
@@ -124,7 +124,7 @@ iterate_partitions()
                 notice "Processing $f"
                 img=${f%.conf}
 
-                read_config_file "$img" || warn "Received error return from command: read_config_file $img"
+                read_config_file || warn "Received error return from command: read_config_file $img"
                 require_var name
 
                 require_var type
@@ -141,6 +141,11 @@ iterate_partitions()
         done
 }
 
+set_var()
+{
+        eval "conf_${img}_${1}=\$${1}"
+}
+
 create_dmsetup_map()
 {
         part=$builddir/${f%.conf}
@@ -159,6 +164,9 @@ create_dmsetup_map()
         alignment_error=$((devsz % 2048))
 
         printf '%d %d linear %s 0\n' $start $devsz "$dev" >> "$map"
+
+        set_var start
+        set_var devsz
         start=$((start + devsz))
 
         if [ $alignment_error -gt 0 ]
@@ -169,6 +177,29 @@ create_dmsetup_map()
         fi
 }
 
+create_ptable_conf()
+{
+        inquire_var start && inquire_var devsz || return 0
+        [ "$start" -a "$devsz" ] || return 0
+
+        case "$type" in
+                partition-table) return;;
+                efi-system-partition) typecode=ef00 ;;
+                bios-grub) typecode=ef02 ;;
+                samizdat-*) typecode=8e00 ;;
+                dm-verity-hashes|dm-verity-data) typecode=8e00 ;;
+        esac
+
+        set -- --new "$i:$start:$((start + devsz - 1))" --change-name "$i:$name"
+        if [ "$typecode" ]
+        then
+                set -- "$@" --typecode "$i:$typecode"
+        fi
+
+        printf '%s\0' "$@" >> $ptable
+        let ++i
+}
+
 set -e
 
 builddir=_build
@@ -188,14 +219,23 @@ quietly $sudo kpartx -dv /dev/mapper/"$map_name"
 quietly $sudo dmsetup remove "$map_name"
 quietly $sudo losetup -D
 
-start=0
 map=$builddir/dmsetup.map
 : > "$map"
-
+start=0
 iterate_partitions create_dmsetup_map
-
 $sudo dmsetup -v create "$map_name" "$map"
 
+ptable=$builddir/ptable.bin
+: > "$ptable"
+i=1
+iterate_partitions create_ptable_conf
+dev=/dev/mapper/$map_name
+printf '%s\0' '-h1' '-p' "$dev" >> "$ptable"
+xargs -0 -x $sudo sgdisk -o < "$ptable" >&2
+$sudo sfdisk --dump "$dev"
+$sudo sfdisk -Y MBR --dump "$dev"
+exit
+
 dev=/dev/mapper/$map_name
 (
         set --
-- 
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