[libvirt] [PATCH 1/2] conf: Add virDomainDiskSetBlockIOTune

[Martin Kletzander]

That function sets disk->blkdeviotune sensibly.

Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
---
 src/conf/domain_conf.c   | 27 +++++++++++++++++++++++++++
 src/conf/domain_conf.h   |  4 ++++
 src/libvirt_private.syms |  1 +
 3 files changed, 32 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 877a0bf5c148..c06b128ddcb4 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -25845,3 +25845,30 @@ virDomainDefVcpuOrderClear(virDomainDefPtr def)
     for (i = 0; i < def->maxvcpus; i++)
         def->vcpus[i]->order = 0;
 }
+
+
+/**
+ * virDomainDiskSetBlockIOTune:
+ * @disk: The disk to set block I/O tuning on
+ * @info: The BlockIoTuneInfo to be set on the @disk
+ *
+ * Set the block I/O tune settings from @info on the @disk, but error out early
+ * in case of any error.  That is to make sure nothing will fail half-way.
+ *
+ * Returns: 0 on success, -1 otherwise
+ */
+int
+virDomainDiskSetBlockIOTune(virDomainDiskDefPtr disk,
+                            virDomainBlockIoTuneInfo *info)
+{
+    char *tmp_group = NULL;
+
+    if (VIR_STRDUP(tmp_group, info->group_name) < 0)
+        return -1;
+
+    VIR_FREE(disk->blkdeviotune.group_name);
+    disk->blkdeviotune = *info;
+    VIR_STEAL_PTR(disk->blkdeviotune.group_name, tmp_group);
+
+    return 0;
+}
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 4d830c51d4f7..507ace871174 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3219,4 +3219,8 @@ bool
 virDomainDeviceInfoAddressIsEqual(const virDomainDeviceInfo *a,
                                   const virDomainDeviceInfo *b)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+
+int virDomainDiskSetBlockIOTune(virDomainDiskDefPtr disk,
+                                virDomainBlockIoTuneInfo *info);
+
 #endif /* __DOMAIN_CONF_H */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index a2866a3a06f0..8e994c7f062b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -314,6 +314,7 @@ virDomainDiskMirrorStateTypeToString;
 virDomainDiskPathByName;
 virDomainDiskRemove;
 virDomainDiskRemoveByName;
+virDomainDiskSetBlockIOTune;
 virDomainDiskSetDriver;
 virDomainDiskSetFormat;
 virDomainDiskSetSource;
-- 
2.11.0