[libvirt] [PATCH 01/40] Remove xen driver checks for priv->handle < 0
Daniel P. Berrange
berrange at redhat.com
Thu May 2 15:18:15 UTC 2013
From: "Daniel P. Berrange" <berrange at redhat.com>
The Xen hypervisor driver checks for 'priv->handle < 0' and
returns -1, but without raising any error. Fortunately this
code will never be executed, since the main Xen driver always
checks 'priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]' prior
to invoking any hypervisor API. Just the redundant checks
for priv->handle
Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
src/xen/xen_hypervisor.c | 98 ++++++++----------------------------------------
1 file changed, 16 insertions(+), 82 deletions(-)
diff --git a/src/xen/xen_hypervisor.c b/src/xen/xen_hypervisor.c
index 9dbbe07..d9941ec 100644
--- a/src/xen/xen_hypervisor.c
+++ b/src/xen/xen_hypervisor.c
@@ -1165,11 +1165,6 @@ xenHypervisorGetSchedulerType(virDomainPtr domain, int *nparams)
char *schedulertype = NULL;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("priv->handle invalid"));
- return NULL;
- }
if (domain->id < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
@@ -1240,11 +1235,7 @@ xenHypervisorGetSchedulerParameters(virDomainPtr domain,
{
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("priv->handle invalid"));
- return -1;
- }
+
if (domain->id < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
@@ -1353,11 +1344,6 @@ xenHypervisorSetSchedulerParameters(virDomainPtr domain,
NULL) < 0)
return -1;
- if (priv->handle < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("priv->handle invalid"));
- return -1;
- }
if (domain->id < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
@@ -2209,7 +2195,7 @@ xenHypervisorOpen(virConnectPtr conn,
virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
if (xenHypervisorInitialize() < 0)
- return -1;
+ return VIR_DRV_OPEN_ERROR;
priv->handle = -1;
@@ -2221,7 +2207,7 @@ xenHypervisorOpen(virConnectPtr conn,
priv->handle = ret;
- return 0;
+ return VIR_DRV_OPEN_SUCCESS;
}
/**
@@ -2238,9 +2224,6 @@ xenHypervisorClose(virConnectPtr conn)
int ret;
xenUnifiedPrivatePtr priv = conn->privateData;
- if (priv->handle < 0)
- return -1;
-
ret = VIR_CLOSE(priv->handle);
if (ret < 0)
return -1;
@@ -2259,12 +2242,8 @@ xenHypervisorClose(virConnectPtr conn)
* Returns 0 in case of success, -1 in case of error
*/
int
-xenHypervisorGetVersion(virConnectPtr conn, unsigned long *hvVer)
+xenHypervisorGetVersion(virConnectPtr conn ATTRIBUTE_UNUSED, unsigned long *hvVer)
{
- xenUnifiedPrivatePtr priv = conn->privateData;
-
- if (priv->handle < 0)
- return -1;
*hvVer = (hv_versions.hv >> 16) * 1000000 + (hv_versions.hv & 0xFFFF) * 1000;
return 0;
}
@@ -2769,9 +2748,6 @@ xenHypervisorNumOfDomains(virConnectPtr conn)
int maxids = last_maxids;
xenUnifiedPrivatePtr priv = conn->privateData;
- if (priv->handle < 0)
- return -1;
-
retry:
if (!(XEN_GETDOMAININFOLIST_ALLOC(dominfos, maxids))) {
virReportOOMError();
@@ -2823,9 +2799,6 @@ xenHypervisorListDomains(virConnectPtr conn, int *ids, int maxids)
int ret, nbids, i;
xenUnifiedPrivatePtr priv = conn->privateData;
- if (priv->handle < 0)
- return -1;
-
if (maxids == 0)
return 0;
@@ -2866,12 +2839,6 @@ xenHypervisorDomainGetOSType(virDomainPtr dom)
xen_getdomaininfo dominfo;
char *ostype = NULL;
- if (priv->handle < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("domain shut off or invalid"));
- return NULL;
- }
-
/* HV's earlier than 3.1.0 don't include the HVM flags in guests status*/
if (hv_versions.hypervisor < 2 ||
hv_versions.dom_interface < 4) {
@@ -2911,9 +2878,6 @@ xenHypervisorHasDomain(virConnectPtr conn, int id)
xenUnifiedPrivatePtr priv = conn->privateData;
xen_getdomaininfo dominfo;
- if (priv->handle < 0)
- return 0;
-
XEN_GETDOMAININFO_CLEAR(dominfo);
if (virXen_getdomaininfo(priv->handle, id, &dominfo) < 0)
@@ -2933,9 +2897,6 @@ xenHypervisorLookupDomainByID(virConnectPtr conn, int id)
virDomainPtr ret;
char *name;
- if (priv->handle < 0)
- return NULL;
-
XEN_GETDOMAININFO_CLEAR(dominfo);
if (virXen_getdomaininfo(priv->handle, id, &dominfo) < 0)
@@ -2967,9 +2928,6 @@ xenHypervisorLookupDomainByUUID(virConnectPtr conn, const unsigned char *uuid)
char *name;
int maxids = 100, nids, i, id;
- if (priv->handle < 0)
- return NULL;
-
retry:
if (!(XEN_GETDOMAININFOLIST_ALLOC(dominfos, maxids))) {
virReportOOMError();
@@ -3030,13 +2988,9 @@ xenHypervisorLookupDomainByUUID(virConnectPtr conn, const unsigned char *uuid)
* Returns the maximum of CPU defined by Xen.
*/
int
-xenHypervisorGetMaxVcpus(virConnectPtr conn, const char *type ATTRIBUTE_UNUSED)
+xenHypervisorGetMaxVcpus(virConnectPtr conn ATTRIBUTE_UNUSED,
+ const char *type ATTRIBUTE_UNUSED)
{
- xenUnifiedPrivatePtr priv = conn->privateData;
-
- if (priv->handle < 0)
- return -1;
-
return MAX_VIRT_CPUS;
}
@@ -3057,9 +3011,6 @@ xenHypervisorGetDomMaxMemory(virConnectPtr conn, int id)
xen_getdomaininfo dominfo;
int ret;
- if (priv->handle < 0)
- return 0;
-
if (kb_per_pages == 0) {
kb_per_pages = sysconf(_SC_PAGESIZE) / 1024;
if (kb_per_pages <= 0)
@@ -3089,9 +3040,7 @@ xenHypervisorGetDomMaxMemory(virConnectPtr conn, int id)
static unsigned long long ATTRIBUTE_NONNULL(1)
xenHypervisorGetMaxMemory(virDomainPtr domain)
{
- xenUnifiedPrivatePtr priv = domain->conn->privateData;
-
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return 0;
return xenHypervisorGetDomMaxMemory(domain->conn, domain->id);
@@ -3121,9 +3070,6 @@ xenHypervisorGetDomInfo(virConnectPtr conn, int id, virDomainInfoPtr info)
kb_per_pages = 4;
}
- if (priv->handle < 0)
- return -1;
-
memset(info, 0, sizeof(virDomainInfo));
XEN_GETDOMAININFO_CLEAR(dominfo);
@@ -3189,9 +3135,7 @@ xenHypervisorGetDomInfo(virConnectPtr conn, int id, virDomainInfoPtr info)
int
xenHypervisorGetDomainInfo(virDomainPtr domain, virDomainInfoPtr info)
{
- xenUnifiedPrivatePtr priv = domain->conn->privateData;
-
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
return xenHypervisorGetDomInfo(domain->conn, domain->id, info);
@@ -3215,12 +3159,11 @@ xenHypervisorGetDomainState(virDomainPtr domain,
int *reason,
unsigned int flags)
{
- xenUnifiedPrivatePtr priv = domain->conn->privateData;
virDomainInfo info;
virCheckFlags(0, -1);
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
if (xenHypervisorGetDomInfo(domain->conn, domain->id, &info) < 0)
@@ -3281,12 +3224,6 @@ xenHypervisorNodeGetCellsFreeMemory(virConnectPtr conn,
return -1;
}
- if (priv->handle < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("priv->handle invalid"));
- return -1;
- }
-
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETAVAILHEAP;
@@ -3322,7 +3259,7 @@ xenHypervisorPauseDomain(virDomainPtr domain)
int ret;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
ret = virXen_pausedomain(priv->handle, domain->id);
@@ -3345,7 +3282,7 @@ xenHypervisorResumeDomain(virDomainPtr domain)
int ret;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
ret = virXen_unpausedomain(priv->handle, domain->id);
@@ -3374,7 +3311,7 @@ xenHypervisorDestroyDomainFlags(virDomainPtr domain, unsigned int flags)
virCheckFlags(0, -1);
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
ret = virXen_destroydomain(priv->handle, domain->id);
@@ -3398,7 +3335,7 @@ xenHypervisorSetMaxMemory(virDomainPtr domain, unsigned long memory)
int ret;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
ret = virXen_setmaxmem(priv->handle, domain->id, memory);
@@ -3424,7 +3361,7 @@ xenHypervisorSetVcpus(virDomainPtr domain, unsigned int nvcpus)
int ret;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0 || domain->id < 0 || nvcpus < 1)
+ if (domain->id < 0 || nvcpus < 1)
return -1;
ret = virXen_setmaxvcpus(priv->handle, domain->id, nvcpus);
@@ -3452,7 +3389,7 @@ xenHypervisorPinVcpu(virDomainPtr domain, unsigned int vcpu,
int ret;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0 || domain->id < 0)
+ if (domain->id < 0)
return -1;
ret = virXen_setvcpumap(priv->handle, domain->id, vcpu,
@@ -3494,7 +3431,7 @@ xenHypervisorGetVcpus(virDomainPtr domain,
virVcpuInfoPtr ipt;
int nbinfo, i;
- if (priv->handle < 0 || domain->id < 0 || sizeof(cpumap_t) & 7) {
+ if (domain->id < 0 || sizeof(cpumap_t) & 7) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("domain shut off or invalid"));
return -1;
@@ -3556,9 +3493,6 @@ xenHypervisorGetVcpuMax(virDomainPtr domain)
int maxcpu;
xenUnifiedPrivatePtr priv = domain->conn->privateData;
- if (priv->handle < 0)
- return -1;
-
/* inactive domain */
if (domain->id < 0) {
maxcpu = MAX_VIRT_CPUS;
--
1.8.1.4
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