[libvirt] [PATCH] domain controller index check

[jmiao at redhat.com]

From: Jincheng Miao <jmiao at redhat.com>

The index of the controller should not be less than zero.
So use virStrToLong_ui() to check the controller index in
virDomainControllerDefParseXML().
---
 src/conf/domain_conf.c  |    2 +-
 src/conf/domain_conf.h  |    2 +-
 src/qemu/qemu_command.c |    2 +-
 src/vmx/vmx.c           |    3 +--
 4 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 402e6e9..2831edf 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -5593,7 +5593,7 @@ virDomainControllerDefParseXML(xmlNodePtr node,
 
     idx = virXMLPropString(node, "index");
     if (idx) {
-        if (virStrToLong_i(idx, NULL, 10, &def->idx) < 0) {
+        if (virStrToLong_ui(idx, NULL, 10, &def->idx) < 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Cannot parse controller index %s"), idx);
             goto error;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index da83eb6..7897b4b 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -790,7 +790,7 @@ struct _virDomainVirtioSerialOpts {
 /* Stores the virtual disk controller configuration */
 struct _virDomainControllerDef {
     int type;
-    int idx;
+    unsigned int idx;
     int model; /* -1 == undef */
     unsigned int queues;
     union {
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 46db28a..7fd1cbf 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1585,7 +1585,7 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
 
         for (i = 0; i < def->ncontrollers; i++) {
             if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
-                if (def->controllers[i]->idx > max_idx)
+                if ((int)def->controllers[i]->idx > max_idx)
                     max_idx = def->controllers[i]->idx;
             }
         }
diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c
index 5464d13..deddfaa 100644
--- a/src/vmx/vmx.c
+++ b/src/vmx/vmx.c
@@ -1664,8 +1664,7 @@ virVMXParseConfig(virVMXContext *ctx,
 
     for (controller = 0; controller < def->ncontrollers; ++controller) {
         if (def->controllers[controller]->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) {
-            if (def->controllers[controller]->idx < 0 ||
-                def->controllers[controller]->idx > 3) {
+            if (def->controllers[controller]->idx > 3) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("SCSI controller index %d out of [0..3] range"),
                                def->controllers[controller]->idx);
-- 
1.7.1