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conf: Implement support for <slices> of disk source
Implement parsing and formatting of the 'storage' slice. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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@ -9470,6 +9470,57 @@ virDomainStorageSourceParseBase(const char *type,
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}
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static virStorageSourceSlicePtr
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virDomainStorageSourceParseSlice(xmlNodePtr node,
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xmlXPathContextPtr ctxt)
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{
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VIR_XPATH_NODE_AUTORESTORE(ctxt);
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g_autofree char *offset = NULL;
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g_autofree char *size = NULL;
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g_autofree virStorageSourceSlicePtr ret = g_new0(virStorageSourceSlice, 1);
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ctxt->node = node;
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if (!(offset = virXPathString("string(./@offset)", ctxt)) ||
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!(size = virXPathString("string(./@size)", ctxt))) {
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("missing offset or size attribute of slice"));
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return NULL;
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}
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if (virStrToLong_ullp(offset, NULL, 10, &ret->offset) < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("malformed value '%s' of 'offset' attribute of slice"),
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offset);
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return NULL;
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}
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if (virStrToLong_ullp(size, NULL, 10, &ret->size) < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("malformed value '%s' of 'size' attribute of slice"),
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size);
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return NULL;
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}
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return g_steal_pointer(&ret);
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}
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static int
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virDomainStorageSourceParseSlices(virStorageSourcePtr src,
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xmlXPathContextPtr ctxt)
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{
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xmlNodePtr node;
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if ((node = virXPathNode("./slices/slice[@type='storage']", ctxt))) {
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if (!(src->sliceStorage = virDomainStorageSourceParseSlice(node, ctxt)))
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return -1;
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}
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return 0;
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}
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/**
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* virDomainStorageSourceParse:
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* @node: XML node pointing to the source element to parse
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@ -9535,6 +9586,9 @@ virDomainStorageSourceParse(xmlNodePtr node,
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if (virDomainDiskSourcePRParse(node, ctxt, &src->pr) < 0)
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return -1;
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if (virDomainStorageSourceParseSlices(src, ctxt) < 0)
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return -1;
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if (virSecurityDeviceLabelDefParseXML(&src->seclabels, &src->nseclabels,
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ctxt, flags) < 0)
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return -1;
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@ -24376,6 +24430,36 @@ virDomainDiskSourceFormatPrivateData(virBufferPtr buf,
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}
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static void
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virDomainDiskSourceFormatSlice(virBufferPtr buf,
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const char *slicetype,
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virStorageSourceSlicePtr slice)
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{
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g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
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if (!slice)
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return;
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virBufferAsprintf(&attrBuf, " type='%s'", slicetype);
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virBufferAsprintf(&attrBuf, " offset='%llu'", slice->offset);
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virBufferAsprintf(&attrBuf, " size='%llu'", slice->size);
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virXMLFormatElement(buf, "slice", &attrBuf, NULL);
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}
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static void
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virDomainDiskSourceFormatSlices(virBufferPtr buf,
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virStorageSourcePtr src)
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{
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g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(buf);
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virDomainDiskSourceFormatSlice(&childBuf, "storage", src->sliceStorage);
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virXMLFormatElement(buf, "slices", NULL, &childBuf);
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}
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/**
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* virDomainDiskSourceFormat:
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* @buf: output buffer
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@ -24446,6 +24530,8 @@ virDomainDiskSourceFormat(virBufferPtr buf,
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return -1;
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}
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virDomainDiskSourceFormatSlices(&childBuf, src);
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if (src->type != VIR_STORAGE_TYPE_NETWORK)
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virDomainSourceDefFormatSeclabel(&childBuf, src->nseclabels,
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src->seclabels, flags);
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