From 609325d29bf6b01b7c4cd1c7c5069bc62571bd84 Mon Sep 17 00:00:00 2001
From: Folkert van Heusden <mail@vanheusden.com>
Date: Wed, 9 Oct 2024 20:31:00 +0200
Subject: [PATCH] WRITE_SAME with WRPROTECT set is not supported

---
 scsi.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scsi.cpp b/scsi.cpp
index 3a9c86f..0e41003 100644
--- a/scsi.cpp
+++ b/scsi.cpp
@@ -851,6 +851,11 @@ std::optional<std::vector<uint8_t> > scsi::validate_request(const uint64_t lba,
 			DOLOG(logging::ll_debug, "scsi::validate_request", "-", "WRITE_SAME with ANCHOR=1 and UNMAP=0 is a failure");
 				return error_invalid_field();
 		}
+
+		if ((opcode == o_write_10 || opcode == o_write_16 || opcode == o_write_verify_10 || opcode == o_write_same_10 || opcode == o_write_same_16) && (CDB[1] >> 5) != 0) {
+			DOLOG(logging::ll_debug, "scsi::validate_request", "-", "WRITE_SAME with WRPROTECT set is not supported");
+				return error_invalid_field();
+		}
 	}
 
 	return { };  // no error