From: Michael Brown <mcb30@etherboot.org>
Date: Tue, 25 Mar 2008 20:29:42 +0000 (+0000)
Subject: [PXEXT] Avoid returning a false EOF when we have an empty buffer queued
X-Git-Tag: v0.9.4~190
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee5bdb0d758a953a4f044795a3571ecb5cf3c735;p=thirdparty%2Fipxe.git

[PXEXT] Avoid returning a false EOF when we have an empty buffer queued
---

diff --git a/src/core/posix_io.c b/src/core/posix_io.c
index 2e3781ad8..b48c1f80c 100644
--- a/src/core/posix_io.c
+++ b/src/core/posix_io.c
@@ -293,7 +293,9 @@ ssize_t read_user ( int fd, userptr_t buffer, off_t offset, size_t max_len ) {
 			free_iob ( iobuf );
 		}
 		file->pos += len;
-		return len;
+		if ( len )
+			return len;
+		break;
 	}
 
 	/* If file has completed, return (after returning all data) */