[libvirt] [PATCH v2 4/8] cpu: simplify failure cleanup paths
Daniel P. Berrangé
berrange at redhat.com
Thu Aug 16 12:10:27 UTC 2018
Get rid of the separate 'error:' label, so all code paths jump straight
to the 'cleanup:' label.
Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
src/cpu/cpu_ppc64.c | 38 ++++++++++++------------
src/cpu/cpu_x86.c | 71 ++++++++++++++++++++-------------------------
2 files changed, 49 insertions(+), 60 deletions(-)
diff --git a/src/cpu/cpu_ppc64.c b/src/cpu/cpu_ppc64.c
index 75da5b77d8..fcba7e9b37 100644
--- a/src/cpu/cpu_ppc64.c
+++ b/src/cpu/cpu_ppc64.c
@@ -288,27 +288,28 @@ ppc64VendorParse(xmlXPathContextPtr ctxt ATTRIBUTE_UNUSED,
{
struct ppc64_map *map = data;
struct ppc64_vendor *vendor;
+ int ret = -1;
if (VIR_ALLOC(vendor) < 0)
return -1;
if (VIR_STRDUP(vendor->name, name) < 0)
- goto error;
+ goto cleanup;
if (ppc64VendorFind(map, vendor->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU vendor %s already defined"), vendor->name);
- goto error;
+ goto cleanup;
}
if (VIR_APPEND_ELEMENT(map->vendors, map->nvendors, vendor) < 0)
- goto error;
+ goto cleanup;
- return 0;
+ ret = 0;
- error:
+ cleanup:
ppc64VendorFree(vendor);
- return -1;
+ return ret;
}
@@ -327,15 +328,15 @@ ppc64ModelParse(xmlXPathContextPtr ctxt,
int ret = -1;
if (VIR_ALLOC(model) < 0)
- goto error;
+ goto cleanup;
if (VIR_STRDUP(model->name, name) < 0)
- goto error;
+ goto cleanup;
if (ppc64ModelFind(map, model->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU model %s already defined"), model->name);
- goto error;
+ goto cleanup;
}
if (virXPathBoolean("boolean(./vendor)", ctxt)) {
@@ -344,14 +345,14 @@ ppc64ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid vendor element in CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
if (!(model->vendor = ppc64VendorFind(map, vendor))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown vendor %s referenced by CPU model %s"),
vendor, model->name);
- goto error;
+ goto cleanup;
}
}
@@ -359,11 +360,11 @@ ppc64ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing PVR information for CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
if (VIR_ALLOC_N(model->data.pvr, n) < 0)
- goto error;
+ goto cleanup;
model->data.len = n;
@@ -374,7 +375,7 @@ ppc64ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing or invalid PVR value in CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
model->data.pvr[i].value = pvr;
@@ -382,24 +383,21 @@ ppc64ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing or invalid PVR mask in CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
model->data.pvr[i].mask = pvr;
}
if (VIR_APPEND_ELEMENT(map->models, map->nmodels, model) < 0)
- goto error;
+ goto cleanup;
ret = 0;
cleanup:
+ ppc64ModelFree(model);
VIR_FREE(vendor);
VIR_FREE(nodes);
return ret;
-
- error:
- ppc64ModelFree(model);
- goto cleanup;
}
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index 73af9d0885..8e4a3d0f77 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -723,15 +723,15 @@ x86VendorParse(xmlXPathContextPtr ctxt,
int ret = -1;
if (VIR_ALLOC(vendor) < 0)
- goto error;
+ goto cleanup;
if (VIR_STRDUP(vendor->name, name) < 0)
- goto error;
+ goto cleanup;
if (x86VendorFind(map, vendor->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU vendor %s already defined"), vendor->name);
- goto error;
+ goto cleanup;
}
string = virXPathString("string(@string)", ctxt);
@@ -739,24 +739,21 @@ x86VendorParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing vendor string for CPU vendor %s"),
vendor->name);
- goto error;
+ goto cleanup;
}
if (virCPUx86VendorToCPUID(string, &vendor->cpuid) < 0)
- goto error;
+ goto cleanup;
if (VIR_APPEND_ELEMENT(map->vendors, map->nvendors, vendor) < 0)
- goto error;
+ goto cleanup;
ret = 0;
cleanup:
+ x86VendorFree(vendor);
VIR_FREE(string);
return ret;
-
- error:
- x86VendorFree(vendor);
- goto cleanup;
}
@@ -896,17 +893,17 @@ x86FeatureParse(xmlXPathContextPtr ctxt,
int ret = -1;
if (!(feature = x86FeatureNew()))
- goto error;
+ goto cleanup;
feature->migratable = true;
if (VIR_STRDUP(feature->name, name) < 0)
- goto error;
+ goto cleanup;
if (x86FeatureFind(map, feature->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU feature %s already defined"), feature->name);
- goto error;
+ goto cleanup;
}
str = virXPathString("string(@migratable)", ctxt);
@@ -915,7 +912,7 @@ x86FeatureParse(xmlXPathContextPtr ctxt,
n = virXPathNodeSet("./cpuid", ctxt, &nodes);
if (n < 0)
- goto error;
+ goto cleanup;
for (i = 0; i < n; i++) {
ctxt->node = nodes[i];
@@ -923,31 +920,28 @@ x86FeatureParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid cpuid[%zu] in %s feature"),
i, feature->name);
- goto error;
+ goto cleanup;
}
if (virCPUx86DataAddCPUIDInt(&feature->data, &cpuid))
- goto error;
+ goto cleanup;
}
if (!feature->migratable &&
VIR_APPEND_ELEMENT_COPY(map->migrate_blockers,
map->nblockers,
feature) < 0)
- goto error;
+ goto cleanup;
if (VIR_APPEND_ELEMENT(map->features, map->nfeatures, feature) < 0)
- goto error;
+ goto cleanup;
ret = 0;
cleanup:
+ x86FeatureFree(feature);
VIR_FREE(nodes);
VIR_FREE(str);
return ret;
-
- error:
- x86FeatureFree(feature);
- goto cleanup;
}
@@ -1160,10 +1154,10 @@ x86ModelParse(xmlXPathContextPtr ctxt,
int ret = -1;
if (!(model = x86ModelNew()))
- goto error;
+ goto cleanup;
if (VIR_STRDUP(model->name, name) < 0)
- goto error;
+ goto cleanup;
if (virXPathNode("./model", ctxt)) {
virCPUx86ModelPtr ancestor;
@@ -1174,7 +1168,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing ancestor's name in CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
if (!(ancestor = x86ModelFind(map, anname))) {
@@ -1182,7 +1176,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
_("Ancestor model %s not found for CPU model %s"),
anname, model->name);
VIR_FREE(anname);
- goto error;
+ goto cleanup;
}
VIR_FREE(anname);
@@ -1190,7 +1184,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
model->vendor = ancestor->vendor;
model->signature = ancestor->signature;
if (x86DataCopy(&model->data, &ancestor->data) < 0)
- goto error;
+ goto cleanup;
}
if (virXPathBoolean("boolean(./signature)", ctxt)) {
@@ -1203,7 +1197,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid CPU signature family in model %s"),
model->name);
- goto error;
+ goto cleanup;
}
rc = virXPathUInt("string(./signature/@model)", ctxt, &sigModel);
@@ -1211,7 +1205,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid CPU signature model in model %s"),
model->name);
- goto error;
+ goto cleanup;
}
model->signature = x86MakeSignature(sigFamily, sigModel, 0);
@@ -1223,20 +1217,20 @@ x86ModelParse(xmlXPathContextPtr ctxt,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid vendor element in CPU model %s"),
model->name);
- goto error;
+ goto cleanup;
}
if (!(model->vendor = x86VendorFind(map, vendor))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown vendor %s referenced by CPU model %s"),
vendor, model->name);
- goto error;
+ goto cleanup;
}
}
n = virXPathNodeSet("./feature", ctxt, &nodes);
if (n < 0)
- goto error;
+ goto cleanup;
for (i = 0; i < n; i++) {
virCPUx86FeaturePtr feature;
@@ -1245,7 +1239,7 @@ x86ModelParse(xmlXPathContextPtr ctxt,
if (!(ftname = virXMLPropString(nodes[i], "name"))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing feature name for CPU model %s"), model->name);
- goto error;
+ goto cleanup;
}
if (!(feature = x86FeatureFind(map, ftname))) {
@@ -1253,27 +1247,24 @@ x86ModelParse(xmlXPathContextPtr ctxt,
_("Feature %s required by CPU model %s not found"),
ftname, model->name);
VIR_FREE(ftname);
- goto error;
+ goto cleanup;
}
VIR_FREE(ftname);
if (x86DataAdd(&model->data, &feature->data))
- goto error;
+ goto cleanup;
}
if (VIR_APPEND_ELEMENT(map->models, map->nmodels, model) < 0)
- goto error;
+ goto cleanup;
ret = 0;
cleanup:
+ x86ModelFree(model);
VIR_FREE(vendor);
VIR_FREE(nodes);
return ret;
-
- error:
- x86ModelFree(model);
- goto cleanup;
}
--
2.17.1
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