ADD: support for Ventoy

Author: alealexpro100

bin/make_images/linux_install_files/init

@@ -1,9 +1,9 @@
-#!/bin/busybox ash
+#!/bin/sh
 # shellcheck shell=dash
 
 # Edited to boot squashfs
 # Taken most parts from original init
-VERSION=0.1.3 #based on alpine init 3.5.0-r0
+VERSION=0.1.4 #based on alpine init 3.5.0-r0
 sysroot=/sysroot
 repofile=/tmp/repositories
 
@@ -41,6 +41,16 @@ eend() {
 	fi
 }
 
+# find the dirs under ALPINE_MNT that are boot repositories
+find_boot_repositories() {
+	if [ -n "$ALPINE_REPO" ]; then
+		echo "$ALPINE_REPO"
+	else
+		find /media/* -name .boot_repository -type f -maxdepth 3 \
+			| sed 's:/.boot_repository$::'
+	fi
+}
+
 # determine the default interface to use if ip=dhcp is set
 # uses the first "eth" interface with operstate 'up'.
 ip_choose_if() {
@@ -110,7 +120,7 @@ is_url() {
 	esac
 }
 
-/bin/busybox mkdir -p /usr/bin /usr/sbin /proc /sys /dev $sysroot
+/bin/busybox mkdir -p /usr/bin /usr/sbin /proc /sys /dev /tmp $sysroot
 /bin/busybox --install -s
 export PATH=/usr/bin:/bin:/usr/sbin:/sbin
 [ -c /dev/null ] || mknod -m 666 /dev/null c 1 3
@@ -133,23 +143,30 @@ eend 0
 
 ln -s /proc/mounts /etc/mtab
 
+ebegin "Mounting boot media"
+if ! is_url "$rootfs_net"; then
+	find_boot_repositories > $repofile
+	nlplug-findfs -p /sbin/mdev -b $repofile -a /tmp/apkovls
+else
+	nlplug-findfs -p /sbin/mdev -n
+	echo -n "skip - "
+fi
+eend $?
+
 overlayfs="/media"
 mkdir -p $overlayfs/root-rw
 mount -t tmpfs root-tmpfs $overlayfs/root-rw
 mkdir -p $overlayfs/root-ro $overlayfs/root-rw/root $overlayfs/root-rw/work
 
 if is_url "$rootfs_net"; then
-    nlplug-findfs -p /sbin/mdev -n
     configure_ip || return_err "Failed to setup network."
 	wget -O $overlayfs/root-rw/squashfs.img "$rootfs_net"
 	ebegin "Mounting rootfs"
 	mount -o loop,ro $overlayfs/root-rw/squashfs.img $overlayfs/root-ro
 	mount -t overlay -o lowerdir=$overlayfs/root-ro,upperdir=$overlayfs/root-rw/root,workdir=$overlayfs/root-rw/work LIVE_OS $sysroot
 	eend $?
 else
-    mkdir -p /tmp
-	ebegin "Finding and mounting rootfs"
-	nlplug-findfs -p /sbin/mdev -b $repofile -a /tmp/apkovls
+	ebegin "Mounting rootfs"
 	repo_dir=$(head -n 1 $repofile)
 	if [ -f "$repo_dir/$rootfs_net" ]; then
 		mount -o loop,ro "$repo_dir/$rootfs_net" $overlayfs/root-ro