From 694fb857abd770db623b6df5475291797b86187c Mon Sep 17 00:00:00 2001
From: Gonglei <arei.gonglei@huawei.com>
Date: Tue, 7 Oct 2014 16:00:06 +0800
Subject: bootindex: add check bootindex function

Determine whether a given bootindex exists or not.
If exists, we report an error.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 bootdevice.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'bootdevice.c')

diff --git a/bootdevice.c b/bootdevice.c
index d5b8789994..f5399df4b7 100644
--- a/bootdevice.c
+++ b/bootdevice.c
@@ -36,6 +36,21 @@ struct FWBootEntry {
 static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
     QTAILQ_HEAD_INITIALIZER(fw_boot_order);
 
+void check_boot_index(int32_t bootindex, Error **errp)
+{
+    FWBootEntry *i;
+
+    if (bootindex >= 0) {
+        QTAILQ_FOREACH(i, &fw_boot_order, link) {
+            if (i->bootindex == bootindex) {
+                error_setg(errp, "The bootindex %d has already been used",
+                           bootindex);
+                return;
+            }
+        }
+    }
+}
+
 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
                           const char *suffix)
 {
-- 
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