From 8a3e312f06c4dcb6f97dfa1bf654d401705f89bc Mon Sep 17 00:00:00 2001
From: Peter Lieven <pl@kamp.de>
Date: Sun, 21 Oct 2012 08:24:24 +0200
Subject: [PATCH] LD_ISCSI: Fail open with O_NONBLOCK

Non-Blocking I/O is supported nowhere in the code. We should fail
until we have support for it.
---
 src/ld_iscsi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/ld_iscsi.c b/src/ld_iscsi.c
index cba17c6..0caf785 100644
--- a/src/ld_iscsi.c
+++ b/src/ld_iscsi.c
@@ -67,6 +67,12 @@ int open(const char *path, int flags, mode_t mode)
 		struct scsi_task *task;
 		struct scsi_readcapacity10 *rc10;
 
+        if (mode & O_NONBLOCK) {
+			LD_ISCSI_DPRINTF(0,"Non-blocking I/O is currently not supported");
+			errno = EINVAL;
+			return -1;			
+		}
+
 		iscsi = iscsi_create_context(initiator);
 		if (iscsi == NULL) {
 			LD_ISCSI_DPRINTF(0,"Failed to create context");