From ce686c244a6862469c404f333041b5d5f79d044b Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Sat, 7 Dec 2019 03:28:14 +0100
Subject: [PATCH] select fstype in autoresize

---
 modules/autoresize.mk | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/modules/autoresize.mk b/modules/autoresize.mk
index fba31eb..012aec9 100644
--- a/modules/autoresize.mk
+++ b/modules/autoresize.mk
@@ -4,6 +4,7 @@ define autoresize :=
 #!/bin/sh
 
 rootfs="$$(mount |grep -w / |cut -d' ' -f1)"
+roottype="$$(mount |grep -w / |cut -d' ' -f5)"
 
 case $$rootfs in
   /dev/mmcblk?p2) rootdev="$${rootfs%p2}";;
@@ -20,7 +21,11 @@ after="$$(sfdisk --dump "$$rootdev")"
 
 if [ "$$before" = "$$after" ]; then
   # second stage
-  resize2fs "$$rootfs"
+  case $$roottype in
+    ext[234]) resize2fs "$$rootfs";;
+    btrfs) btrfs filesystem resize max /;;
+    nilfs2) nilfs-resize "$$rootfs";;
+  esac
   systemctl disable autoresize
 else
   # finish first stage
@@ -31,7 +36,7 @@ endef
 
 define autoresize_unit :=
 [Unit]
-Description=Resize root filesystem at boot
+Description=Resize root filesystem during first boot
 
 [Service]
 ExecStart=/opt/autoresize.sh
-- 
2.39.2