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tools: Tiny clean-ups for two functions in virsh-completer.c

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These two functions were duplicating some cleanup paths, so let's just merge
both cleanup and error paths together.  To distinguish whether we need to
clean-up the return value let's keep it in @tmp until the function is successful
in which case we set @ret to the value of @tmp and set @tmp to NULL.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Martin Kletzander 2018-05-21 11:00:01 +02:00
parent 9e1a808e91
commit 08e190fdda
1 changed files with 21 additions and 27 deletions
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48
tools/virsh-completer.c
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@ -98,6 +98,7 @@ virshDomainInterfaceCompleter(vshControl *ctl,
size_t i;
unsigned int domainXMLFlags = 0;
char **ret = NULL;
char **tmp = NULL;
virCheckFlags(VIRSH_DOMAIN_INTERFACE_COMPLETER_MAC, NULL);
@ -108,39 +109,35 @@ virshDomainInterfaceCompleter(vshControl *ctl,
domainXMLFlags = VIR_DOMAIN_XML_INACTIVE;
if (virshDomainGetXML(ctl, cmd, domainXMLFlags, &xmldoc, &ctxt) < 0)
goto error;
goto cleanup;
ninterfaces = virXPathNodeSet("./devices/interface", ctxt, &interfaces);
if (ninterfaces < 0)
goto error;
goto cleanup;
if (VIR_ALLOC_N(ret, ninterfaces + 1) < 0)
goto error;
if (VIR_ALLOC_N(tmp, ninterfaces + 1) < 0)
goto cleanup;
for (i = 0; i < ninterfaces; i++) {
ctxt->node = interfaces[i];
if (!(flags & VIRSH_DOMAIN_INTERFACE_COMPLETER_MAC) &&
(ret[i] = virXPathString("string(./target/@dev)", ctxt)))
(tmp[i] = virXPathString("string(./target/@dev)", ctxt)))
continue;
/* In case we are dealing with inactive domain XML there's no
* <target dev=''/>. Offer MAC addresses then. */
if (!(ret[i] = virXPathString("string(./mac/@address)", ctxt)))
goto error;
if (!(tmp[i] = virXPathString("string(./mac/@address)", ctxt)))
goto cleanup;
}
VIR_STEAL_PTR(ret, tmp);
cleanup:
VIR_FREE(interfaces);
xmlFreeDoc(xmldoc);
xmlXPathFreeContext(ctxt);
virStringListFree(tmp);
return ret;
error:
VIR_FREE(interfaces);
xmlFreeDoc(xmldoc);
xmlXPathFreeContext(ctxt);
virStringListFree(ret);
return NULL;
}
@ -155,6 +152,7 @@ virshDomainDiskTargetCompleter(vshControl *ctl,
xmlNodePtr *disks = NULL;
int ndisks;
size_t i;
char **tmp = NULL;
char **ret = NULL;
virCheckFlags(0, NULL);
@ -163,32 +161,28 @@ virshDomainDiskTargetCompleter(vshControl *ctl,
return NULL;
if (virshDomainGetXML(ctl, cmd, 0, &xmldoc, &ctxt) < 0)
goto error;
goto cleanup;
ndisks = virXPathNodeSet("./devices/disk", ctxt, &disks);
if (ndisks < 0)
goto error;
goto cleanup;
if (VIR_ALLOC_N(ret, ndisks + 1) < 0)
goto error;
if (VIR_ALLOC_N(tmp, ndisks + 1) < 0)
goto cleanup;
for (i = 0; i < ndisks; i++) {
ctxt->node = disks[i];
if (!(ret[i] = virXPathString("string(./target/@dev)", ctxt)))
goto error;
if (!(tmp[i] = virXPathString("string(./target/@dev)", ctxt)))
goto cleanup;
}
VIR_STEAL_PTR(ret, tmp);
cleanup:
VIR_FREE(disks);
xmlFreeDoc(xmldoc);
xmlXPathFreeContext(ctxt);
virStringListFree(tmp);
return ret;
error:
VIR_FREE(disks);
xmlFreeDoc(xmldoc);
xmlXPathFreeContext(ctxt);
virStringListFree(ret);
return NULL;
}