From 82d0f92ab8b84466ae20ab919c1f9c3577b5cecb Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Mon, 22 May 2017 21:56:04 +0000
Subject:  Initial commit

---
 sub/disk-image/make-disk-image | 107 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100755 sub/disk-image/make-disk-image

(limited to 'sub/disk-image/make-disk-image')

diff --git a/sub/disk-image/make-disk-image b/sub/disk-image/make-disk-image
new file mode 100755
index 0000000..64d2c40
--- /dev/null
+++ b/sub/disk-image/make-disk-image
@@ -0,0 +1,107 @@
+#!/bin/sh -e
+
+# umount is given with -l because some operating systems have triggers that will launch processes keep file descriptors open to the mount, preventing unmounting
+
+output="$1"
+rootfs_size="$2"
+swap_size="$3"
+rwfs_size="$4"
+userfs_size="$5"
+extra_size="$6"
+
+totalsize=$(s6-expr ${rootfs_size} + ${swap_size} + ${rwfs_size} + ${userfs_size} + ${extra_size} + 4)
+
+# prepare extlinux.conf
+
+if s6-test ${KERNEL_GENERIC_ARCH} = x86 ; then
+  consolearg="console=ttyS0,115200n8"
+  if ${USE_GRAPHIC} ; then
+    consolearg=
+  fi
+  if s6-test ${KERNEL_ARCH} = x86_64 ; then
+    bootpartition=/dev/sda1
+  else
+    bootpartition=/dev/hda1
+  fi
+  s6-cat > ${output}/rootfs/boot/extlinux.conf <<EOF
+serial 0 115200
+console 0
+prompt 0
+default linux
+totaltimeout 1200
+say extlinux booting
+label linux
+  linux /boot/vmlinuz
+  initrd /boot/initramfs.gz
+  append ro root=$bootpartition rootfstype=ext4 loglevel=4 initrd=/boot/initramfs.gz $consolearg
+EOF
+fi
+
+s6-rmrf "$output/disk-image.raw"
+setuidgid ${NORMALUSER} dd if=/dev/zero of=$output/disk-image.raw bs=1 count=0 seek=${totalsize}M
+
+fdisk $output/disk-image.raw <<EOF
+n
+
+
+
++${rootfs_size}M
+n
+
+
+
++${swap_size}M
+t
+2
+82
+n
+
+
+
++${rwfs_size}M
+n
+
+
+
+n
+
++${userfs_size}M
+n
+
+
+a
+1
+w
+EOF
+
+loop=$(losetup -f)
+losetup -P "$loop" "$output/disk-image.raw"
+
+{
+  mkfs.ext4 -O ^huge_file ${loop}p1
+  mkswap ${loop}p2
+  mkfs.ext4 -O ^huge_file ${loop}p3
+  mkfs.ext4 -O ^huge_file ${loop}p5
+  mkfs.ext4 -O ^huge_file ${loop}p6
+
+
+  s6-mkdir -p "$output/tmp/rootfs" "$output/tmp/rwfs" "$output/tmp/userfs" "$output/tmp/stagingfs"
+  mount -t ext4 ${loop}p1 "$output/tmp/rootfs"
+  s6-hiercopy "$output/rootfs" "$output/tmp/rootfs"
+  if s6-test ${KERNEL_GENERIC_ARCH} = x86 ; then
+    dd if=${output}/build-build/opt/syslinux/usr/share/syslinux/mbr.bin of=${loop}
+    extlinux -i "$output/tmp/rootfs/boot"
+  fi
+  umount -l "$output/tmp/rootfs"
+  mount -t ext4 ${loop}p3 "$output/tmp/rwfs"
+  s6-hiercopy "$output/rwfs" "$output/tmp/rwfs"
+  umount -l "$output/tmp/rwfs"
+  mount -t ext4 ${loop}p5 "$output/tmp/userfs"
+  s6-hiercopy "$output/userfs" "$output/tmp/userfs"
+  umount -l "$output/tmp/userfs"
+  mount -t ext4 ${loop}p6 "$output/tmp/stagingfs"
+  s6-hiercopy "$output/stagingfs" "$output/tmp/stagingfs"
+  umount -l "$output/tmp/stagingfs"
+} || { losetup -d "$loop" ; exit 1 ; }
+
+losetup -d "$loop"
-- 
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