libvirt/SOURCES/libvirt-conf-Implement-support-for-slices-of-disk-source.patch

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From 6d5174acd7530d554ac2651f3e6a5da9f69fe6e4 Mon Sep 17 00:00:00 2001
Message-Id: <6d5174acd7530d554ac2651f3e6a5da9f69fe6e4@dist-git>
From: Peter Krempa <pkrempa@redhat.com>
Date: Wed, 19 Feb 2020 15:10:20 +0100
Subject: [PATCH] conf: Implement support for <slices> of disk source
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Implement parsing and formatting of the 'storage' slice.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit bbf5d05cfd003e33600009cac7ea98ef1539dd7c)
https://bugzilla.redhat.com/show_bug.cgi?id=1791788
Message-Id: <d31bb27ae30140c9deb696972ee76a90d7bcc610.1582120424.git.pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
src/conf/domain_conf.c | 86 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index b46b92aecf..5c11f49463 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -9441,6 +9441,57 @@ virDomainStorageSourceParseBase(const char *type,
}
+static virStorageSourceSlicePtr
+virDomainStorageSourceParseSlice(xmlNodePtr node,
+ xmlXPathContextPtr ctxt)
+{
+ VIR_XPATH_NODE_AUTORESTORE(ctxt);
+ g_autofree char *offset = NULL;
+ g_autofree char *size = NULL;
+ g_autofree virStorageSourceSlicePtr ret = g_new0(virStorageSourceSlice, 1);
+
+ ctxt->node = node;
+
+ if (!(offset = virXPathString("string(./@offset)", ctxt)) ||
+ !(size = virXPathString("string(./@size)", ctxt))) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("missing offset or size attribute of slice"));
+ return NULL;
+ }
+
+ if (virStrToLong_ullp(offset, NULL, 10, &ret->offset) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("malformed value '%s' of 'offset' attribute of slice"),
+ offset);
+ return NULL;
+ }
+
+ if (virStrToLong_ullp(size, NULL, 10, &ret->size) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("malformed value '%s' of 'size' attribute of slice"),
+ size);
+ return NULL;
+ }
+
+ return g_steal_pointer(&ret);
+}
+
+
+static int
+virDomainStorageSourceParseSlices(virStorageSourcePtr src,
+ xmlXPathContextPtr ctxt)
+{
+ xmlNodePtr node;
+
+ if ((node = virXPathNode("./slices/slice[@type='storage']", ctxt))) {
+ if (!(src->sliceStorage = virDomainStorageSourceParseSlice(node, ctxt)))
+ return -1;
+ }
+
+ return 0;
+}
+
+
/**
* virDomainStorageSourceParse:
* @node: XML node pointing to the source element to parse
@@ -9506,6 +9557,9 @@ virDomainStorageSourceParse(xmlNodePtr node,
if (virDomainDiskSourcePRParse(node, ctxt, &src->pr) < 0)
return -1;
+ if (virDomainStorageSourceParseSlices(src, ctxt) < 0)
+ return -1;
+
if (virSecurityDeviceLabelDefParseXML(&src->seclabels, &src->nseclabels,
ctxt, flags) < 0)
return -1;
@@ -24226,6 +24280,36 @@ virDomainDiskSourceFormatPrivateData(virBufferPtr buf,
}
+static void
+virDomainDiskSourceFormatSlice(virBufferPtr buf,
+ const char *slicetype,
+ virStorageSourceSlicePtr slice)
+{
+ g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
+
+ if (!slice)
+ return;
+
+ virBufferAsprintf(&attrBuf, " type='%s'", slicetype);
+ virBufferAsprintf(&attrBuf, " offset='%llu'", slice->offset);
+ virBufferAsprintf(&attrBuf, " size='%llu'", slice->size);
+
+ virXMLFormatElement(buf, "slice", &attrBuf, NULL);
+}
+
+
+static void
+virDomainDiskSourceFormatSlices(virBufferPtr buf,
+ virStorageSourcePtr src)
+{
+ g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(buf);
+
+ virDomainDiskSourceFormatSlice(&childBuf, "storage", src->sliceStorage);
+
+ virXMLFormatElement(buf, "slices", NULL, &childBuf);
+}
+
+
/**
* virDomainDiskSourceFormat:
* @buf: output buffer
@@ -24296,6 +24380,8 @@ virDomainDiskSourceFormat(virBufferPtr buf,
return -1;
}
+ virDomainDiskSourceFormatSlices(&childBuf, src);
+
if (src->type != VIR_STORAGE_TYPE_NETWORK)
virDomainSourceDefFormatSeclabel(&childBuf, src->nseclabels,
src->seclabels, flags);
--
2.25.0