[PATCH V3 3/7] qemu: check the bootIndex could be changed or not
Introduce qemuCheckBootIndex to check whether the device's
bootIndex can be changed or need to be changed. Only bootindex
of devices whose bootIndexSpecified is true can be changed.
Signed-off-by: Jiang Jiacheng <jiangjiacheng(a)huawei.com>
---
src/qemu/qemu_domain.c | 32 ++++++++++++++++++++++++++++++++
src/qemu/qemu_domain.h | 4 ++++
2 files changed, 36 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 5c05032ce3..6ec3be14c0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -12277,3 +12277,35 @@ qemuDomainSchedCoreStop(qemuDomainObjPrivate *priv)
priv->schedCoreChildPID = -1;
}
}
+
+/**
+ * qemuCheckBootIndex:
+ * @devInfo: origin device info
+ * @new_bootindex: new bootIndex
+ *
+ * Check whether the device's bootIndex can be changed or need to
+ * be changed. Only devices with bootIndex specified before can be
+ * changed with @new_bootindex.
+ *
+ * Returns: 1 on need to change
+ * 0 on no need to change
+ * -1 on could not change with an error
+ */
+int
+qemuCheckBootIndex(virDomainDeviceInfo *devInfo,
+ const int new_bootindex)
+{
+ if (new_bootindex && !devInfo->bootIndexSpecified) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("this device does not set boot index, cannot change
it."));
+ return -1;
+ }
+
+ /* if the new bootindex is different from the old bootindex,
+ * we will update the bootindex. */
+ if (devInfo->bootIndex != new_bootindex) {
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 2f027fad87..5869771a0d 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -1140,3 +1140,7 @@ qemuDomainSchedCoreStart(virQEMUDriverConfig *cfg,
void
qemuDomainSchedCoreStop(qemuDomainObjPrivate *priv);
+
+int
+qemuCheckBootIndex(virDomainDeviceInfo *devInfo,
+ const int new_bootindex);
--
2.33.0