On Tue, Dec 04, 2012 at 05:43:08PM +0400, Dmitry Guryanov wrote:
> Read disk images size from xml description and fill
> virStorageVolDef.capacity and allocation (let's consider
> that allocation is the same as capacity, calculating real
> allcoation will be implemented later).
>
> Signed-off-by: Dmitry Guryanov <[email protected]>
> ---
> src/parallels/parallels_storage.c | 54 +++++++++++++++++++++++++++++++++++-
> 1 files changed, 52 insertions(+), 2 deletions(-)
>
> diff --git a/src/parallels/parallels_storage.c
> b/src/parallels/parallels_storage.c
> index 4d71eb1..1448a74 100644
> --- a/src/parallels/parallels_storage.c
> +++ b/src/parallels/parallels_storage.c
> @@ -253,10 +253,57 @@ parallelsPoolAddByDomain(virConnectPtr conn,
> virDomainObjPtr dom)
> return pool;
> }
>
> +static int parallelsDiskDescParseNode(xmlDocPtr xml,
> + xmlNodePtr root,
> + virStorageVolDefPtr def)
> +{
> + xmlXPathContextPtr ctxt = NULL;
> + int ret;
> +
> + if (STRNEQ((const char *)root->name, "Parallels_disk_image")) {
> + virReportError(VIR_ERR_XML_ERROR,
> + "%s", _("unknown root element for storage pool"));
> + goto cleanup;
> + }
> +
> + ctxt = xmlXPathNewContext(xml);
> + if (ctxt == NULL) {
> + virReportOOMError();
> + goto cleanup;
> + }
> +
> + ctxt->node = root;
> +
> + if (virXPathULongLong("string(./Disk_Parameters/Disk_size)",
> + ctxt, &def->capacity))
> + ret = -1;
you can drop the ./ in front of the XPath query, it's redundant, but
harmless :-)
> + def->capacity <<= 9;
> + def->allocation = def->capacity;
> +cleanup:
> + xmlXPathFreeContext(ctxt);
> + return ret;
> +
> +}
> +
> +static int parallelsDiskDescParse(const char *path, virStorageVolDefPtr def)
> +{
> + xmlDocPtr xml;
> + int ret = -1;
> +
> + if (!(xml = virXMLParse(path, NULL, NULL)))
> + return -1;
> +
> + ret = parallelsDiskDescParseNode(xml, xmlDocGetRootElement(xml), def);
> + xmlFreeDoc(xml);
> + return ret;
> +}
> +
> static int parallelsAddDiskVolume(virStoragePoolObjPtr pool,
> virDomainObjPtr dom,
> const char *diskName,
> - const char *diskPath)
> + const char *diskPath,
> + const char *diskDescPath)
> {
> virStorageVolDefPtr def = NULL;
>
> @@ -269,6 +316,8 @@ static int parallelsAddDiskVolume(virStoragePoolObjPtr
> pool,
>
> def->type = VIR_STORAGE_VOL_FILE;
>
> + parallelsDiskDescParse(diskDescPath, def);
> +
> if (!(def->target.path = realpath(diskPath, NULL)))
> goto no_memory;
>
> @@ -334,7 +383,8 @@ static int parallelsFindVmVolumes(virStoragePoolObjPtr
> pool,
>
> /* here we know, that ent->d_name is a disk image directory */
>
> - if (parallelsAddDiskVolume(pool, dom, ent->d_name, diskPath))
> + if (parallelsAddDiskVolume(pool, dom, ent->d_name,
> + diskPath, diskDescPath))
> goto cleanup;
>
> }
ACK,
daniel
--
Daniel Veillard | Open Source and Standards, Red Hat
[email protected] | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | virtualization library http://libvirt.org/
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