From 70f9fcc12e811ef6e2ff173c2dfcfca547467d12 Mon Sep 17 00:00:00 2001
From: Nikolay Edigaryev <edigaryev@gmail.com>
Date: Wed, 23 Nov 2022 07:37:48 +0400
Subject: [PATCH] tart run: do not check --disk lock for read-only attachments
 (#334)

---
 Sources/tart/Commands/Run.swift | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Sources/tart/Commands/Run.swift b/Sources/tart/Commands/Run.swift
index fa7a277..7f421ee 100644
--- a/Sources/tart/Commands/Run.swift
+++ b/Sources/tart/Commands/Run.swift
@@ -110,6 +110,11 @@ struct Run: AsyncParsableCommand {
     // Error out if the disk is locked by the host (e.g. it was mounted in Finder),
     // see https://github.com/cirruslabs/tart/issues/323 for more details.
     for additionalDiskAttachment in additionalDiskAttachments {
+      // Read-only attachments do not seem to acquire the lock
+      if additionalDiskAttachment.isReadOnly {
+        continue
+      }
+
       if try !FileLock(lockURL: additionalDiskAttachment.url).trylock() {
         print("disk \(additionalDiskAttachment.url.path) seems to be already in use, "
           + "unmount it first in Finder")