From e61a0dde83fab11b063814d69b393d06f556d024 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 16 Nov 2023 17:05:57 +0100
Subject: mime-detection: detect GPT disk images by contents, not just suffix

---
 data/freedesktop.org.xml.in | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'data')

diff --git a/data/freedesktop.org.xml.in b/data/freedesktop.org.xml.in
index 1f8eabb..1a37e9d 100644
--- a/data/freedesktop.org.xml.in
+++ b/data/freedesktop.org.xml.in
@@ -1755,6 +1755,13 @@ command to generate the output files.
     <alias type="application/x-raw-disk-image"/>
     <glob pattern="*.raw-disk-image"/>
     <glob pattern="*.img"/>
+    <!-- The magic GPT partition table header is at sector 1, which might a different byte offsets, depending on the sector size. Let's cover the 4 most relevant sectors sizes -->
+    <magic>
+      <match type="string" value="EFI PART" offset="512"/>
+      <match type="string" value="EFI PART" offset="1024"/>
+      <match type="string" value="EFI PART" offset="2048"/>
+      <match type="string" value="EFI PART" offset="4096"/>
+    </magic>
   </mime-type>
   <mime-type type="application/x-raw-floppy-disk-image">
     <comment>Floppy disk image</comment>
-- 
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