[Qemu-devel] [RFC PATCH 1/5] bootindex: add *_boot_device_path function

[<arei.gonglei@huawei.com>]

From: Chenliang <chenliang88@huawei.com>

Add del_boot_device_path and modify_boot_device_path. Device should
be removed from boot device list  by del_boot_device_path when device
hotplug. modify_boot_device_path is used to modify deviceboot order.

Signed-off-by: Chenliang <chenliang88@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
---
 include/sysemu/sysemu.h |  4 ++++
 vl.c                    | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 285c45b..38ef1cd 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -204,6 +204,10 @@ void usb_info(Monitor *mon, const QDict *qdict);
 
 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
                           const char *suffix);
+void del_boot_device_path(int32_t bootindex, DeviceState *dev,
+                          const char *suffix);
+void modify_boot_device_path(int32_t bootindex, DeviceState *dev,
+                             const char *suffix);
 char *get_boot_devices_list(size_t *size, bool ignore_suffixes);
 
 DeviceState *get_boot_device(uint32_t position);
diff --git a/vl.c b/vl.c
index a1686ef..6264e11 100644
--- a/vl.c
+++ b/vl.c
@@ -1247,6 +1247,61 @@ void add_boot_device_path(int32_t bootindex, DeviceState *dev,
     QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
 }
 
+static bool is_same_fw_dev_path(DeviceState *src, DeviceState *target)
+{
+    bool ret = false;
+    char *devpath_src = qdev_get_fw_dev_path(src);
+    char *devpath_target = qdev_get_fw_dev_path(target);
+
+    if (!strcmp(devpath_src, devpath_target)) {
+        ret = true;
+    }
+
+    g_free(devpath_src);
+    g_free(devpath_target);
+    return ret;
+}
+
+void del_boot_device_path(int32_t bootindex, DeviceState *dev,
+                          const char *suffix)
+{
+    FWBootEntry *i;
+
+    assert(dev != NULL);
+
+    QTAILQ_FOREACH(i, &fw_boot_order, link) {
+        if (is_same_fw_dev_path(i->dev, dev)) {
+            if (suffix && i->suffix && strcmp(i->suffix, suffix)) {
+                continue;
+            }
+            QTAILQ_REMOVE(&fw_boot_order, i, link);
+            g_free(i->suffix);
+            g_free(i);
+            break;
+        }
+    }
+
+    if (bootindex == -1) {
+        return;
+    }
+
+    QTAILQ_FOREACH(i, &fw_boot_order, link) {
+        if (i->bootindex == bootindex) {
+            QTAILQ_REMOVE(&fw_boot_order, i, link);
+            g_free(i->suffix);
+            g_free(i);
+            break;
+        }
+    }
+}
+
+void modify_boot_device_path(int32_t bootindex, DeviceState *dev,
+                             const char *suffix)
+{
+    del_boot_device_path(bootindex, dev, suffix);
+    add_boot_device_path(bootindex, dev, suffix);
+}
+
 DeviceState *get_boot_device(uint32_t position)
 {
     uint32_t counter = 0;
-- 
1.7.12.4