From 40b60aca18e74c0617ed75234d31e00c530b9289 Mon Sep 17 00:00:00 2001
From: "Jeffrey H. Johnson" <johnsonjh.dev@gmail.com>
Date: Wed, 15 Jul 2026 17:03:31 -0400
Subject: [PATCH] Fix DOS binary file I/O always returning EOF

Closes #365 (https://github.com/davidgiven/ack/issues/365)

Signed-off-by: Jeffrey H. Johnson <johnsonjh.dev@gmail.com>
---
 plat/msdos/libsys/read.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plat/msdos/libsys/read.c b/plat/msdos/libsys/read.c
index bed9fcd14..e1e61cde0 100644
--- a/plat/msdos/libsys/read.c
+++ b/plat/msdos/libsys/read.c
@@ -77,6 +77,8 @@ ssize_t read(int fd, void* buffer, size_t count)
 				--left;
 			}
 		}
+		else
+			return r;
 	} while (tot < count && !eof && _sys_isreadyr(fd));
 
 	return tot;