From 52e2835061429d93abacf8d1cf00f7da69e7a853 Mon Sep 17 00:00:00 2001
From: Alice Frosi <afrosi@redhat.com>
Date: Mon, 27 Feb 2023 13:19:01 +0100
Subject: seitan: add op_cmp

The operation op_cmp allows to compare 2 areas of memory and if they
don't match to jump to an operation.
---
 operations.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'operations.c')

diff --git a/operations.c b/operations.c
index 8cd0828..afc4b00 100644
--- a/operations.c
+++ b/operations.c
@@ -313,6 +313,12 @@ int do_operations(void *data, struct op operations[], struct seccomp_notif *req,
 			break;
 		case OP_END:
 			return 0;
+		case OP_CMP:
+			if (memcmp((uint16_t *)data + operations[i].cmp.s1_off,
+				   (uint16_t *)data + operations[i].cmp.s2_off,
+				   operations[i].cmp.size) != 0) {
+				i = operations[i].cmp.jmp;
+			}
 			break;
 		default:
 			fprintf(stderr, "unknow operation %d \n",
-- 
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