From 63126c75fa7f0938f0119f599257da473924b431 Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Mon, 9 Jun 2025 17:48:17 +0200
Subject: [PATCH] Prevent shrinking attempts

---
 virtweb_backend/src/utils/file_disks_utils.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/virtweb_backend/src/utils/file_disks_utils.rs b/virtweb_backend/src/utils/file_disks_utils.rs
index ee9786d..001569a 100644
--- a/virtweb_backend/src/utils/file_disks_utils.rs
+++ b/virtweb_backend/src/utils/file_disks_utils.rs
@@ -406,6 +406,10 @@ impl DiskFileInfo {
 
     /// Resize disk
     pub fn resize(&self, new_size: FileSize) -> anyhow::Result<()> {
+        if new_size <= self.virtual_size().unwrap_or(new_size) {
+            anyhow::bail!("Shrinking disk image file is not supported!");
+        }
+
         let mut cmd = Command::new(constants::PROGRAM_QEMU_IMAGE);
         cmd.arg("resize")
             .arg("-f")