virsh-completer: switch to using tmp instead of ret

Construct the potential return value in an array called 'tmp'
and only assign it to 'ret' if we're going to return it.

This will allow us to unify the error and success paths.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Ján Tomko 2019-03-28 18:03:30 +01:00
parent 080ebb2371
commit 37e820daea

View File

@ -79,6 +79,7 @@ virshDomainNameCompleter(vshControl *ctl,
int ndomains = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(VIR_CONNECT_LIST_DOMAINS_ACTIVE |
VIR_CONNECT_LIST_DOMAINS_INACTIVE |
@ -95,19 +96,21 @@ virshDomainNameCompleter(vshControl *ctl,
if ((ndomains = virConnectListAllDomains(priv->conn, &domains, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, ndomains + 1) < 0)
if (VIR_ALLOC_N(tmp, ndomains + 1) < 0)
goto error;
for (i = 0; i < ndomains; i++) {
const char *name = virDomainGetName(domains[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virshDomainFree(domains[i]);
}
VIR_FREE(domains);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -115,8 +118,8 @@ virshDomainNameCompleter(vshControl *ctl,
virshDomainFree(domains[i]);
VIR_FREE(domains);
for (i = 0; i < ndomains; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -232,6 +235,7 @@ virshStoragePoolNameCompleter(vshControl *ctl,
int npools = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(VIR_CONNECT_LIST_STORAGE_POOLS_INACTIVE |
VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE |
@ -244,19 +248,21 @@ virshStoragePoolNameCompleter(vshControl *ctl,
if ((npools = virConnectListAllStoragePools(priv->conn, &pools, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, npools + 1) < 0)
if (VIR_ALLOC_N(tmp, npools + 1) < 0)
goto error;
for (i = 0; i < npools; i++) {
const char *name = virStoragePoolGetName(pools[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virStoragePoolFree(pools[i]);
}
VIR_FREE(pools);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -264,8 +270,8 @@ virshStoragePoolNameCompleter(vshControl *ctl,
virStoragePoolFree(pools[i]);
VIR_FREE(pools);
for (i = 0; i < npools; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -282,6 +288,7 @@ virshStorageVolNameCompleter(vshControl *ctl,
int nvols = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -295,20 +302,23 @@ virshStorageVolNameCompleter(vshControl *ctl,
goto error;
nvols = rc;
if (VIR_ALLOC_N(ret, nvols + 1) < 0)
if (VIR_ALLOC_N(tmp, nvols + 1) < 0)
goto error;
for (i = 0; i < nvols; i++) {
const char *name = virStorageVolGetName(vols[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virStorageVolFree(vols[i]);
}
VIR_FREE(vols);
virStoragePoolFree(pool);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -316,8 +326,8 @@ virshStorageVolNameCompleter(vshControl *ctl,
virStorageVolFree(vols[i]);
VIR_FREE(vols);
for (i = 0; i < nvols; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
virStoragePoolFree(pool);
return NULL;
}
@ -333,6 +343,7 @@ virshInterfaceNameCompleter(vshControl *ctl,
int nifaces = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(VIR_CONNECT_LIST_INTERFACES_ACTIVE |
VIR_CONNECT_LIST_INTERFACES_INACTIVE,
@ -344,19 +355,21 @@ virshInterfaceNameCompleter(vshControl *ctl,
if ((nifaces = virConnectListAllInterfaces(priv->conn, &ifaces, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, nifaces + 1) < 0)
if (VIR_ALLOC_N(tmp, nifaces + 1) < 0)
goto error;
for (i = 0; i < nifaces; i++) {
const char *name = virInterfaceGetName(ifaces[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virInterfaceFree(ifaces[i]);
}
VIR_FREE(ifaces);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -364,8 +377,8 @@ virshInterfaceNameCompleter(vshControl *ctl,
virInterfaceFree(ifaces[i]);
VIR_FREE(ifaces);
for (i = 0; i < nifaces; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -380,6 +393,7 @@ virshNetworkNameCompleter(vshControl *ctl,
int nnets = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(VIR_CONNECT_LIST_NETWORKS_INACTIVE |
VIR_CONNECT_LIST_NETWORKS_ACTIVE |
@ -392,19 +406,21 @@ virshNetworkNameCompleter(vshControl *ctl,
if ((nnets = virConnectListAllNetworks(priv->conn, &nets, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, nnets + 1) < 0)
if (VIR_ALLOC_N(tmp, nnets + 1) < 0)
goto error;
for (i = 0; i < nnets; i++) {
const char *name = virNetworkGetName(nets[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virNetworkFree(nets[i]);
}
VIR_FREE(nets);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -412,8 +428,8 @@ virshNetworkNameCompleter(vshControl *ctl,
virNetworkFree(nets[i]);
VIR_FREE(nets);
for (i = 0; i < nnets; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -425,21 +441,24 @@ virshNetworkEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
{
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
if (VIR_ALLOC_N(ret, VIR_NETWORK_EVENT_ID_LAST + 1) < 0)
if (VIR_ALLOC_N(tmp, VIR_NETWORK_EVENT_ID_LAST + 1) < 0)
goto error;
for (i = 0; i < VIR_NETWORK_EVENT_ID_LAST; i++) {
if (VIR_STRDUP(ret[i], virshNetworkEventCallbacks[i].name) < 0)
if (VIR_STRDUP(tmp[i], virshNetworkEventCallbacks[i].name) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
virStringListFree(ret);
virStringListFree(tmp);
return NULL;
}
@ -454,6 +473,7 @@ virshNodeDeviceNameCompleter(vshControl *ctl,
int ndevs = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -463,19 +483,21 @@ virshNodeDeviceNameCompleter(vshControl *ctl,
if ((ndevs = virConnectListAllNodeDevices(priv->conn, &devs, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, ndevs + 1) < 0)
if (VIR_ALLOC_N(tmp, ndevs + 1) < 0)
goto error;
for (i = 0; i < ndevs; i++) {
const char *name = virNodeDeviceGetName(devs[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virNodeDeviceFree(devs[i]);
}
VIR_FREE(devs);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -483,8 +505,8 @@ virshNodeDeviceNameCompleter(vshControl *ctl,
virNodeDeviceFree(devs[i]);
VIR_FREE(devs);
for (i = 0; i < ndevs; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -499,6 +521,7 @@ virshNWFilterNameCompleter(vshControl *ctl,
int nnwfilters = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -508,19 +531,21 @@ virshNWFilterNameCompleter(vshControl *ctl,
if ((nnwfilters = virConnectListAllNWFilters(priv->conn, &nwfilters, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, nnwfilters + 1) < 0)
if (VIR_ALLOC_N(tmp, nnwfilters + 1) < 0)
goto error;
for (i = 0; i < nnwfilters; i++) {
const char *name = virNWFilterGetName(nwfilters[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virNWFilterFree(nwfilters[i]);
}
VIR_FREE(nwfilters);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -528,8 +553,8 @@ virshNWFilterNameCompleter(vshControl *ctl,
virNWFilterFree(nwfilters[i]);
VIR_FREE(nwfilters);
for (i = 0; i < nnwfilters; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -544,6 +569,7 @@ virshNWFilterBindingNameCompleter(vshControl *ctl,
int nbindings = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -553,19 +579,21 @@ virshNWFilterBindingNameCompleter(vshControl *ctl,
if ((nbindings = virConnectListAllNWFilterBindings(priv->conn, &bindings, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, nbindings + 1) < 0)
if (VIR_ALLOC_N(tmp, nbindings + 1) < 0)
goto error;
for (i = 0; i < nbindings; i++) {
const char *name = virNWFilterBindingGetPortDev(bindings[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virNWFilterBindingFree(bindings[i]);
}
VIR_FREE(bindings);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -573,8 +601,8 @@ virshNWFilterBindingNameCompleter(vshControl *ctl,
virNWFilterBindingFree(bindings[i]);
VIR_FREE(bindings);
for (i = 0; i < nbindings; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -589,6 +617,7 @@ virshSecretUUIDCompleter(vshControl *ctl,
int nsecrets = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -598,20 +627,22 @@ virshSecretUUIDCompleter(vshControl *ctl,
if ((nsecrets = virConnectListAllSecrets(priv->conn, &secrets, flags)) < 0)
return NULL;
if (VIR_ALLOC_N(ret, nsecrets + 1) < 0)
if (VIR_ALLOC_N(tmp, nsecrets + 1) < 0)
goto error;
for (i = 0; i < nsecrets; i++) {
char uuid[VIR_UUID_STRING_BUFLEN];
if (virSecretGetUUIDString(secrets[i], uuid) < 0 ||
VIR_STRDUP(ret[i], uuid) < 0)
VIR_STRDUP(tmp[i], uuid) < 0)
goto error;
virSecretFree(secrets[i]);
}
VIR_FREE(secrets);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -619,8 +650,8 @@ virshSecretUUIDCompleter(vshControl *ctl,
virSecretFree(secrets[i]);
VIR_FREE(secrets);
for (i = 0; i < nsecrets; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
return NULL;
}
@ -637,6 +668,7 @@ virshSnapshotNameCompleter(vshControl *ctl,
int nsnapshots = 0;
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -650,13 +682,13 @@ virshSnapshotNameCompleter(vshControl *ctl,
goto error;
nsnapshots = rc;
if (VIR_ALLOC_N(ret, nsnapshots + 1) < 0)
if (VIR_ALLOC_N(tmp, nsnapshots + 1) < 0)
goto error;
for (i = 0; i < nsnapshots; i++) {
const char *name = virDomainSnapshotGetName(snapshots[i]);
if (VIR_STRDUP(ret[i], name) < 0)
if (VIR_STRDUP(tmp[i], name) < 0)
goto error;
virshDomainSnapshotFree(snapshots[i]);
@ -664,6 +696,8 @@ virshSnapshotNameCompleter(vshControl *ctl,
VIR_FREE(snapshots);
virshDomainFree(dom);
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
@ -671,8 +705,8 @@ virshSnapshotNameCompleter(vshControl *ctl,
virshDomainSnapshotFree(snapshots[i]);
VIR_FREE(snapshots);
for (i = 0; i < nsnapshots; i++)
VIR_FREE(ret[i]);
VIR_FREE(ret);
VIR_FREE(tmp[i]);
VIR_FREE(tmp);
virshDomainFree(dom);
return NULL;
}
@ -698,6 +732,7 @@ virshAllocpagesPagesizeCompleter(vshControl *ctl,
char *cap_xml = NULL;
char **ret = NULL;
char *unit = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -724,7 +759,7 @@ virshAllocpagesPagesizeCompleter(vshControl *ctl,
if (npages <= 0)
goto error;
if (VIR_ALLOC_N(ret, npages + 1) < 0)
if (VIR_ALLOC_N(tmp, npages + 1) < 0)
goto error;
for (i = 0; i < npages; i++) {
@ -737,10 +772,12 @@ virshAllocpagesPagesizeCompleter(vshControl *ctl,
if (virScaleInteger(&byteval, unit, 1024, UINT_MAX) < 0)
goto error;
size = vshPrettyCapacity(byteval, &suffix);
if (virAsprintf(&ret[i], "%.0f%s", size, suffix) < 0)
if (virAsprintf(&tmp[i], "%.0f%s", size, suffix) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
cleanup:
xmlXPathFreeContext(ctxt);
VIR_FREE(pages);
@ -753,11 +790,11 @@ virshAllocpagesPagesizeCompleter(vshControl *ctl,
return ret;
error:
if (ret) {
if (tmp) {
for (i = 0; i < npages; i++)
VIR_FREE(ret[i]);
VIR_FREE(tmp[i]);
}
VIR_FREE(ret);
VIR_FREE(tmp);
goto cleanup;
}
@ -769,21 +806,24 @@ virshSecretEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
{
size_t i;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
if (VIR_ALLOC_N(ret, VIR_SECRET_EVENT_ID_LAST + 1) < 0)
if (VIR_ALLOC_N(tmp, VIR_SECRET_EVENT_ID_LAST + 1) < 0)
goto error;
for (i = 0; i < VIR_SECRET_EVENT_ID_LAST; i++) {
if (VIR_STRDUP(ret[i], virshSecretEventCallbacks[i].name) < 0)
if (VIR_STRDUP(tmp[i], virshSecretEventCallbacks[i].name) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
virStringListFree(ret);
virStringListFree(tmp);
return NULL;
}
@ -795,21 +835,24 @@ virshDomainEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
{
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
if (VIR_ALLOC_N(ret, VIR_DOMAIN_EVENT_ID_LAST + 1) < 0)
if (VIR_ALLOC_N(tmp, VIR_DOMAIN_EVENT_ID_LAST + 1) < 0)
goto error;
for (i = 0; i < VIR_DOMAIN_EVENT_ID_LAST; i++) {
if (VIR_STRDUP(ret[i], virshDomainEventCallbacks[i].name) < 0)
if (VIR_STRDUP(tmp[i], virshDomainEventCallbacks[i].name) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
virStringListFree(ret);
virStringListFree(tmp);
return NULL;
}
@ -821,21 +864,24 @@ virshPoolEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
{
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
if (VIR_ALLOC_N(ret, VIR_STORAGE_POOL_EVENT_ID_LAST + 1) < 0)
if (VIR_ALLOC_N(tmp, VIR_STORAGE_POOL_EVENT_ID_LAST + 1) < 0)
goto error;
for (i = 0; i < VIR_STORAGE_POOL_EVENT_ID_LAST; i++) {
if (VIR_STRDUP(ret[i], virshPoolEventCallbacks[i].name) < 0)
if (VIR_STRDUP(tmp[i], virshPoolEventCallbacks[i].name) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
virStringListFree(ret);
virStringListFree(tmp);
return NULL;
}
@ -856,6 +902,7 @@ virshDomainInterfaceStateCompleter(vshControl *ctl,
xmlNodePtr *interfaces = NULL;
char *xpath = NULL;
char *state = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -885,18 +932,20 @@ virshDomainInterfaceStateCompleter(vshControl *ctl,
ctxt->node = interfaces[0];
if (VIR_ALLOC_N(ret, 2) < 0)
if (VIR_ALLOC_N(tmp, 2) < 0)
goto error;
if ((state = virXPathString("string(./link/@state)", ctxt)) &&
STREQ(state, "down")) {
if (VIR_STRDUP(ret[0], "up") < 0)
if (VIR_STRDUP(tmp[0], "up") < 0)
goto error;
} else {
if (VIR_STRDUP(ret[0], "down") < 0)
if (VIR_STRDUP(tmp[0], "down") < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
cleanup:
VIR_FREE(state);
VIR_FREE(xpath);
@ -906,8 +955,8 @@ virshDomainInterfaceStateCompleter(vshControl *ctl,
return ret;
error:
virStringListFree(ret);
ret = NULL;
virStringListFree(tmp);
tmp = NULL;
goto cleanup;
}
@ -919,21 +968,24 @@ virshNodedevEventNameCompleter(vshControl *ctl ATTRIBUTE_UNUSED,
{
size_t i = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
if (VIR_ALLOC_N(ret, VIR_NODE_DEVICE_EVENT_ID_LAST + 1) < 0)
if (VIR_ALLOC_N(tmp, VIR_NODE_DEVICE_EVENT_ID_LAST + 1) < 0)
goto error;
for (i = 0; i < VIR_NODE_DEVICE_EVENT_ID_LAST; i++) {
if (VIR_STRDUP(ret[i], virshNodedevEventCallbacks[i].name) < 0)
if (VIR_STRDUP(tmp[i], virshNodedevEventCallbacks[i].name) < 0)
goto error;
}
VIR_STEAL_PTR(ret, tmp);
return ret;
error:
virStringListFree(ret);
virStringListFree(tmp);
return NULL;
}
@ -951,6 +1003,7 @@ virshCellnoCompleter(vshControl *ctl,
size_t i = 0;
char *cap_xml = NULL;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(0, NULL);
@ -967,14 +1020,16 @@ virshCellnoCompleter(vshControl *ctl,
if (ncells <= 0)
goto error;
if (VIR_ALLOC_N(ret, ncells + 1))
if (VIR_ALLOC_N(tmp, ncells + 1))
goto error;
for (i = 0; i < ncells; i++) {
if (!(ret[i] = virXMLPropString(cells[i], "id")))
if (!(tmp[i] = virXMLPropString(cells[i], "id")))
goto error;
}
VIR_STEAL_PTR(ret, tmp);
cleanup:
xmlXPathFreeContext(ctxt);
VIR_FREE(cells);
@ -984,11 +1039,11 @@ virshCellnoCompleter(vshControl *ctl,
return ret;
error:
if (ret) {
if (tmp) {
for (i = 0; i < ncells; i++)
VIR_FREE(ret[i]);
VIR_FREE(tmp[i]);
}
VIR_FREE(ret);
VIR_FREE(tmp);
goto cleanup;
}