From 7a5e1836db1a5b06bc3d3647e12a9763f5114cef Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@cryptonomic.net>
Date: Tue, 19 Jan 2021 14:42:02 -0500
Subject: implement more of the discoverable partition specification

---
 src/partvi | 41 +++++++++++++++++++++++++++++++++--------
 1 file changed, 33 insertions(+), 8 deletions(-)

(limited to 'src/partvi')

diff --git a/src/partvi b/src/partvi
index ab8d5c0..719b0d3 100755
--- a/src/partvi
+++ b/src/partvi
@@ -137,11 +137,13 @@ build_partition_image()
                         boot|samizdat-keys)   mkfs.btrfs -q "$tmp" || die "mkfs.btrfs failed" ;;
                         dm-verity-data)
                                 partuuid=${root_hash:0:32}
+                                set_var partuuid
                                 cp -f -T --reflink "$data_path" "$builddir"/"$partuuid"
                                 ln -sfT "$partuuid" "$tmp"
                         ;;
                         dm-verity-hashes)
                                 partuuid=${root_hash:32:32}
+                                set_var partuuid
                                 cp -f -T --reflink "$data_path".verity "$builddir"/"$partuuid"
                                 ln -sfT "$partuuid" "$tmp"
                         ;;
@@ -181,9 +183,16 @@ set_var()
         eval "conf_${img}_${1}=\$${1}"
 }
 
+format_guid()
+{
+    set -- "$(tr -dc 0-9a-fA-F <<< "$1")"
+    printf '%s\n' "${1:0:8}-${1:8:4}-${1:12:4}-${1:16:4}-${1:20:12}"
+}
+
 create_ptable_conf()
 {
-        #inquire_var start && inquire_var devsz || return
+        unset partuuid
+        inquire_var partuuid
         part=$builddir/${f%.conf}
         devsz=$(stat -L -c '%s' "$part") || return
         [ "$start" -a "$devsz" ] || return
@@ -197,6 +206,15 @@ create_ptable_conf()
         case "$type" in
                 partition-table) start=$((start + devsz)); return;;
                 efi-system-partition) typecode=C12A7328-F81F-11D2-BA4B-00A0C93EC93B ;;
+                dm-verity-data|dm-verity-hashes)
+                    case "$name" in
+                        samizdat-rootfs|samizdat-root-patch) typecode=4f68bce3-e8cd-4db1-96e7-fbcaf984b709 ;;
+                        samizdat-root-patch-verity) typecode=2c7357ed-ebd2-46d9-aec1-23d437ec2bf5 ;;
+                        samizdat-root-seed) ;; # keep default
+                        samizdat-root-seed-verity) ;; # keep default
+                    esac
+                    ;;
+                root) typecode=4f68bce3-e8cd-4db1-96e7-fbcaf984b709 ;;
                 bios-grub)
                     typecode=21686148-6449-6E6F-744E-656564454649
                     printf 'start=1, size=%d, type=ee\n' \
@@ -212,13 +230,20 @@ create_ptable_conf()
                     ;;
         esac
 
-        printf '%d: start=%d, size=%d, type=%s, name="%s"\n' \
-                "$i" \
-                "$start_sectors" \
-                "$size_sectors" \
-                "$typecode" \
-                "$name" \
-                >> "$GPT_TABLE_FILE"
+        (
+            exec >> "$GPT_TABLE_FILE"
+            printf '%d: start=%d, size=%d, type=%s, name="%s"' \
+                    "$i" \
+                    "$start_sectors" \
+                    "$size_sectors" \
+                    "$typecode" \
+                    "$name"
+            if [ "$partuuid" ]
+            then
+                printf ', uuid=%s' "$(format_guid "$partuuid")"
+            fi
+            echo
+        )
         let ++i
         start=$((start + devsz))
 }
-- 
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