From 6bb7b873158853efe31d760e18667d3ff8343291 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 4 May 2017 07:29:58 +0200
Subject: sunxi: sysupgrade: don't write partitions twice
When existing partitions are retained, the dd call writing the uboot image
in the space before the first partition was accidentally writing the whole
image, making the code for individual partitions redundant. Limit the copy
to 1016KiB (the first 8KiB are skipped, and the first partition starts at
1024KiB).
In addition, conv=notrunc is replaced with conv=fsync. It seems this was an
oversight, as notrunc doesn't make sense for block devices and all other dd
commands use conv=fsync.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
---
target/linux/sunxi/base-files/lib/upgrade/platform.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/linux/sunxi/base-files/lib/upgrade/platform.sh b/target/linux/sunxi/base-files/lib/upgrade/platform.sh
index f2cd970d42..776bdf53bf 100644
--- a/target/linux/sunxi/base-files/lib/upgrade/platform.sh
+++ b/target/linux/sunxi/base-files/lib/upgrade/platform.sh
@@ -43,7 +43,7 @@ platform_do_upgrade() {
fi
#write uboot image
- get_image "$@" | dd of="$diskdev" bs=1024 skip=8 seek=8 conv=notrunc
+ get_image "$@" | dd of="$diskdev" bs=1024 skip=8 seek=8 count=1016 conv=fsync
#iterate over each partition from the image and write it to the boot disk
while read part start size; do
part="$(($part - 2))"
--
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