From 04275e3f2fb9a4c7bc232e81be016c8ff44e0292 Mon Sep 17 00:00:00 2001
From: Leon van Kammen <leonvankammen@gmail.com>
Date: Tue, 18 Feb 2025 15:24:38 +0100
Subject: [PATCH] added overlayfs

---
 com/isoterminal.js             |  2 +-
 com/isoterminal/ISOTerminal.js | 12 ++----------
 com/isoterminal/worker.js      | 20 +++++++++++++++++++-
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/com/isoterminal.js b/com/isoterminal.js
index ff88f76..4ce8e95 100644
--- a/com/isoterminal.js
+++ b/com/isoterminal.js
@@ -14,7 +14,7 @@
  * | property         | type      | default                | info |
  * |------------------|-----------|------------------------|------|
  * | `iso`            | `string`  | https`//forgejo.isvery.ninja/assets/xrsh-buildroot/main/xrsh.iso" | |
- * | `overlayfs`      | `string`  | *WORK-IN-PROGRESS* | |
+ * | `overlayfs`      | `string`  | ''     | zip URL/file to autoextract on top of filesystem |
  * | `width`          | `number`  |  800   ||
  * | `height`         | `number`  |  600   ||
  * | `depth`          | `number`  |  0.03  ||
diff --git a/com/isoterminal/ISOTerminal.js b/com/isoterminal/ISOTerminal.js
index ef2c83c..cd74ccf 100644
--- a/com/isoterminal/ISOTerminal.js
+++ b/com/isoterminal/ISOTerminal.js
@@ -141,6 +141,7 @@ ISOTerminal.prototype.start = function(opts){
     //      },
     //screen_dummy: true,
     //disable_jit: false,
+    overlayfs: this.opts.overlayfs,
     filesystem: {},
     autostart: true,
     prompt: this.opts.prompt,
@@ -249,16 +250,6 @@ ISOTerminal.prototype.startVM = function(opts){
 
   this.addEventListener('emulator-started', async (e) => {
 
-    // OVERLAY FS *FIXME*
-    //if( me.opts.overlayfs ){
-    //  fetch(me.opts.overlayfs)
-    //  .then( (f) => {
-    //    f.arrayBuffer().then( (buf) => {
-    //      emulator.create_file('overlayfs.zip', new Uint8Array(buf) )
-    //    })
-    //  })
-    //}
-
     let line = ''
     this.ready = false
 
@@ -287,6 +278,7 @@ ISOTerminal.prototype.bootISO = function(){
   let msg = "\n\r" + msglib.empowermsg + msglib.text_color + msglib.loadmsg + msglib.text_reset
   this.emit('serial-output-string', msg)
   this.emit('runISO',{...this.v86opts, bufferLatency: this.opts.bufferLatency })
+
 }
 
 
diff --git a/com/isoterminal/worker.js b/com/isoterminal/worker.js
index 5c4c3c0..48494a0 100644
--- a/com/isoterminal/worker.js
+++ b/com/isoterminal/worker.js
@@ -1,7 +1,7 @@
 importScripts("libv86.js");
 importScripts("ISOTerminal.js")  // we don't instance it again here (just use its functions)
 
-this.runISO = function(opts){
+this.runISO = async function(opts){
   this.opts = opts
   if( opts.debug ) console.dir(opts)
 
@@ -66,9 +66,13 @@ this.runISO = function(opts){
     })
   }
 
+  
+
   importScripts("feat/javascript.js")
   importScripts("feat/index.html.js")
   importScripts("feat/autorestore.js")
+
+  if( opts.overlayfs ) await this.addOverlayFS(opts)
 }
 /* 
  * forward events/functions so non-worker world can reach them
@@ -94,3 +98,17 @@ this.onmessage = async function(e){
     }
   }
 }
+
+this.addOverlayFS = async function(opts){
+  return new Promise( (resolve,reject) => {
+    // OVERLAY FS *FIXME*
+    if( opts.overlayfs ){
+      fetch(opts.overlayfs)
+      .then( (f) => {
+        f.arrayBuffer().then( (buf) => {
+          this.emulator.create_file('overlayfs.zip', new Uint8Array(buf) )
+        })
+      })
+    }
+  })
+}