From d45aacdcf25b98d90f4144bfab77d4983b4dc85f Mon Sep 17 00:00:00 2001
From: snow flurry <snow@datagirl.xyz>
Date: Tue, 17 Nov 2020 22:20:08 -0800
Subject: [PATCH] dosfs: detect 0xE9 (JMP rel16) in BPB

---
 src/dosfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dosfs.c b/src/dosfs.c
index e428457..71abc22 100644
--- a/src/dosfs.c
+++ b/src/dosfs.c
@@ -34,7 +34,8 @@ open_image(const char *path, int flags, dosfs_t *fsd)
         return errno;
     }
 
-    if (fsd->ib.jmp[0] != 0xEB || fsd->ib.jmp[2] != 0x90) {
+    if ((fsd->ib.jmp[0] != 0xEB || fsd->ib.jmp[2] != 0x90) && /* JMP rel8 */
+        fsd->ib.jmp[0] != 0xE9) { /* JMP rel16 */
         DPRINTF(("hm... doesn't look like a FAT image?\n"));
         close(ifd);
         return EOPNOTSUPP;