File 2f97ea32-libxl-hostdev-fix.patch of Package libvirt

commit 2f97ea328f6c8df59e07b24122a8ff95efca95b8
Author: Chunyan Liu <cyliu@suse.com>
Date:   Tue Jul 15 13:03:16 2014 +0800

    libxl: fix return value error Attach|DetachDeviceFlags
    
    Code logic in libxlDomainAttachDeviceFlags and libxlDomainDetachDeviceFlags
    is wrong with return value in error cases.
    
    'ret' was being set to 0 if 'flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG' was
    false. Then if something like virDomainDeviceDefParse() failed in the
    VIR_DOMAIN_DEVICE_MODIFY_LIVE logic, the error would be reported but the
    function would return success.
    
    Signed-off-by: Chunyan Liu <cyliu@suse.com>

Index: libvirt-1.2.5/src/libxl/libxl_driver.c
===================================================================
--- libvirt-1.2.5.orig/src/libxl/libxl_driver.c
+++ libvirt-1.2.5/src/libxl/libxl_driver.c
@@ -3290,10 +3290,8 @@ libxlDomainAttachDeviceFlags(virDomainPt
                                                     driver->xmlopt)))
             goto endjob;
 
-        if ((ret = libxlDomainAttachDeviceConfig(vmdef, dev)) < 0)
+        if (libxlDomainAttachDeviceConfig(vmdef, dev) < 0)
             goto endjob;
-    } else {
-        ret = 0;
     }
 
     if (flags & VIR_DOMAIN_DEVICE_MODIFY_LIVE) {
@@ -3304,7 +3302,7 @@ libxlDomainAttachDeviceFlags(virDomainPt
                                             VIR_DOMAIN_XML_INACTIVE)))
             goto endjob;
 
-        if ((ret = libxlDomainAttachDeviceLive(driver, priv, vm, dev)) < 0)
+        if (libxlDomainAttachDeviceLive(driver, priv, vm, dev) < 0)
             goto endjob;
 
         /*
@@ -3312,11 +3310,13 @@ libxlDomainAttachDeviceFlags(virDomainPt
          * changed even if we attach the device failed.
          */
         if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
-            ret = -1;
+            goto endjob;
     }
 
+    ret = 0;
+
     /* Finally, if no error until here, we can save config. */
-    if (!ret && (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG)) {
+    if (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG) {
         ret = virDomainSaveConfig(cfg->configDir, vmdef);
         if (!ret) {
             virDomainObjAssignDef(vm, vmdef, false, NULL);
@@ -3401,10 +3401,8 @@ libxlDomainDetachDeviceFlags(virDomainPt
                                                     driver->xmlopt)))
             goto endjob;
 
-        if ((ret = libxlDomainDetachDeviceConfig(vmdef, dev)) < 0)
+        if (libxlDomainDetachDeviceConfig(vmdef, dev) < 0)
             goto endjob;
-    } else {
-        ret = 0;
     }
 
     if (flags & VIR_DOMAIN_DEVICE_MODIFY_LIVE) {
@@ -3415,7 +3413,7 @@ libxlDomainDetachDeviceFlags(virDomainPt
                                             VIR_DOMAIN_XML_INACTIVE)))
             goto endjob;
 
-        if ((ret = libxlDomainDetachDeviceLive(driver, priv, vm, dev)) < 0)
+        if (libxlDomainDetachDeviceLive(driver, priv, vm, dev) < 0)
             goto endjob;
 
         /*
@@ -3423,11 +3421,13 @@ libxlDomainDetachDeviceFlags(virDomainPt
          * changed even if we attach the device failed.
          */
         if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
-            ret = -1;
+            goto endjob;
     }
 
+    ret = 0;
+
     /* Finally, if no error until here, we can save config. */
-    if (!ret && (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG)) {
+    if (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG) {
         ret = virDomainSaveConfig(cfg->configDir, vmdef);
         if (!ret) {
             virDomainObjAssignDef(vm, vmdef, false, NULL);