[libvirt] [PATCH 2/5] qemu: Don't lose group_name

[Martin Kletzander]

Due to our APIs not copying various pointers, we need to carry it
around on the side and just supply it every time it is needed.
Otherwise it will not work with both --live and --config options.

Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
---
 src/qemu/qemu_driver.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index f45972e3c823..3a0245ec1cb8 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -17256,6 +17256,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
     virTypedParameterPtr eventParams = NULL;
     int eventNparams = 0;
     int eventMaxparams = 0;
+    char *group_name = NULL;

     virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
                   VIR_DOMAIN_AFFECT_CONFIG, -1);
@@ -17370,7 +17371,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,

         /* NB: Cannot use macro since this is a value.s not a value.ul */
         if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_GROUP_NAME)) {
-            if (VIR_STRDUP(info.group_name, params->value.s) < 0)
+            if (VIR_STRDUP(group_name, params->value.s) < 0)
                 goto endjob;
             set_fields |= QEMU_BLOCK_IOTUNE_SET_GROUP_NAME;
             if (virTypedParamsAddString(&eventParams, &eventNparams,
@@ -17500,6 +17501,10 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,

 #undef CHECK_MAX

+        if (set_fields & QEMU_BLOCK_IOTUNE_SET_GROUP_NAME &&
+            VIR_STRDUP(info.group_name, group_name) < 0)
+            goto endjob;
+
          /* NB: Let's let QEMU decide how to handle issues with _length
           * via the JSON error code from the block_set_io_throttle call */

@@ -17513,7 +17518,6 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
         if (ret < 0)
             goto endjob;
         disk->blkdeviotune = info;
-        info.group_name = NULL;

         ret = virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps);
         if (ret < 0)
@@ -17533,10 +17537,14 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
                            path);
             goto endjob;
         }
+
+        if (set_fields & QEMU_BLOCK_IOTUNE_SET_GROUP_NAME &&
+            VIR_STRDUP(info.group_name, group_name) < 0)
+            goto endjob;
+
         qemuDomainSetBlockIoTuneDefaults(&info, &conf_disk->blkdeviotune,
                                          set_fields);
         conf_disk->blkdeviotune = info;
-        info.group_name = NULL;
         ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
         if (ret < 0)
             goto endjob;
@@ -17547,7 +17555,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
     qemuDomainObjEndJob(driver, vm);

  cleanup:
-    VIR_FREE(info.group_name);
+    VIR_FREE(group_name);
     VIR_FREE(device);
     virDomainObjEndAPI(&vm);
     if (eventNparams)
-- 
2.11.0