Merge "Revert "Remove requirement that fsv_meta file is next to its inp..."" into main
diff --git a/tools/releasetools/fsverity_metadata_generator.py b/tools/releasetools/fsverity_metadata_generator.py
index e531cca..50e23e7 100644
--- a/tools/releasetools/fsverity_metadata_generator.py
+++ b/tools/releasetools/fsverity_metadata_generator.py
@@ -230,6 +230,12 @@
   if not output_file:
     output_file = input_file + '.fsv_meta'
 
+  if output_file != args.input + '.fsv_meta':
+    sys.exit('When generating .fsv_meta files for symlinks, we assume that all fsv_meta files '
+      'are named the same as the file they protect, just with the .fsv_meta suffix appended. '
+      'We require that all .fsv_meta files follow this convention regardless of if it\'s a link or '
+      'not. However {args.input} had a different output file: {args.output}')
+
   # remove the output file first, as switching between a file and a symlink can be complicated
   try:
     os.remove(output_file)