mirror of
https://github.com/kou029w/megabit-os.git
synced 2025-01-18 16:07:58 +00:00
25 lines
760 B
Bash
Executable file
25 lines
760 B
Bash
Executable file
#!/bin/sh
|
|
# デバイスイメージファイルの生成
|
|
# Usage: bin/img-gen
|
|
# Required: gzip awk fallocate parted xargs losetup mkfs.fat tar
|
|
cd -- "$(dirname -- "$0")/.."
|
|
set -eux
|
|
size="$(gzip -l megabit-armhf.tar.gz | awk 'END{printf"%.f",$2*1.02}')"
|
|
fallocate -l "${size}" megabit-armhf.img
|
|
xargs -l parted -s megabit-armhf.img <<EOF
|
|
mklabel msdos
|
|
mkpart primary fat32 0 100%
|
|
set 1 boot on
|
|
EOF
|
|
dev="$(losetup -f)"
|
|
finally="losetup -d '${dev}'"
|
|
trap 'sh -c "${finally}"' EXIT
|
|
losetup -P "${dev}" megabit-armhf.img
|
|
part="${dev}p1"
|
|
mkfs.fat "${part}"
|
|
tmp="$(mktemp -d)"
|
|
finally="rmdir '${tmp}'; ${finally}"
|
|
mount "${part}" "${tmp}"
|
|
finally="umount '${tmp}'; ${finally}"
|
|
tar xf megabit-armhf.tar.gz -C "${tmp}"
|
|
finally="${finally}; gzip -f megabit-armhf.img"
|