Use "truncate" to adjust size of existing file instead of "dd" which
required creating a copy. This saves space on tmpfs. It may be as low
as 2.1 MiB when using OpenWrt default user space and way more (20+ MiB)
when flashing vendor firmware.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-RAMFS_COPY_BIN='osafeloader oseama otrx'
+RAMFS_COPY_BIN='osafeloader oseama otrx truncate'
PART_NAME=firmware
while [ "$(dd if=$dir/root skip=$ubi_length bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
ubi_length=$(($ubi_length + 131072))
done
- dd if=$dir/root of=/tmp/root.ubi bs=131072 count=$((ubi_length / 131072)) 2>/dev/null
+ truncate -s $ubi_length $dir/root
[ $? -ne 0 ] && {
echo "Failed to prepare new UBI image."
return
# Flash
mtd write /tmp/kernel.trx firmware || exit 1
- nand_do_upgrade /tmp/root.ubi
+ nand_do_upgrade $dir/root
}
platform_do_upgrade_nand_seama() {