[Qemu-devel] [PATCH v6 01/27] bootindex: add check bootindex function

[arei.gonglei]

From: Gonglei <arei.gong...@huawei.com>

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

Signed-off-by: Gonglei <arei.gong...@huawei.com>
---
 include/sysemu/sysemu.h |  1 +
 vl.c                    | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index d8539fd..b343df5 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -207,6 +207,7 @@ void do_usb_add(Monitor *mon, const QDict *qdict);
 void do_usb_del(Monitor *mon, const QDict *qdict);
 void usb_info(Monitor *mon, const QDict *qdict);
 
+void check_boot_index(int32_t bootindex, Error **errp);
 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
                           const char *suffix);
 char *get_boot_devices_list(size_t *size, bool ignore_suffixes);
diff --git a/vl.c b/vl.c
index 95be92d..76fb008 100644
--- a/vl.c
+++ b/vl.c
@@ -1237,6 +1237,21 @@ static void restore_boot_order(void *opaque)
     g_free(normal_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)
 {
-- 
1.7.12.4