On 2/23/19 4:24 PM, Eric Blake wrote:
> Add a new function to make it possible to parse a list of snapshots
> at once. This is a counterpart to the previous patch making it
> possible to produce all snapshots in a single XML string, and
> intentionally parses the same top-level element <snapshots> with
> an optional attribute current='name'.
>
> Note that existing REDEFINE code uses virDomainSnapshotRedefinePrep()
> for some sanity checking - much of that checking involves parent/child
> relationships (which make sense when doing one element at a time and
> worrying about replacement), but where this patch gets away with the
> much simpler final call to virDomainSnapshotUpdateRelations() (for
> all relationship checking after the end, since we know we started with
> no relations at all, and since checking parent relationships
> per-snapshot is not viable as we don't control which order the
> snapshots appear in). All other domain-agnostic sanity checks used
> during a redefinition are copied here.
Some day maybe there's a helper that can handle both uses...
>
> Signed-off-by: Eric Blake <eblake@xxxxxxxxxx>
> ---
> src/conf/snapshot_conf.h | 7 ++
> src/conf/snapshot_conf.c | 135 +++++++++++++++++++++++++++++++++++++++
> src/libvirt_private.syms | 1 +
> 3 files changed, 143 insertions(+)
>
> diff --git a/src/conf/snapshot_conf.h b/src/conf/snapshot_conf.h
> index 19ab75f895..6a92241fe6 100644
> --- a/src/conf/snapshot_conf.h
> +++ b/src/conf/snapshot_conf.h
> @@ -117,6 +117,13 @@ virDomainSnapshotDefPtr virDomainSnapshotDefParseNode(xmlDocPtr xml,
> virCapsPtr caps,
> virDomainXMLOptionPtr xmlopt,
> unsigned int flags);
> +int virDomainSnapshotDefParseList(const char *xmlSstr,
> + const unsigned char *domain_uuid,
> + virDomainSnapshotObjListPtr snapshots,
> + virDomainSnapshotObjPtr *current_snap,
> + virCapsPtr caps,
> + virDomainXMLOptionPtr xmlopt,
> + unsigned int flags);
virDomainSnapshotObjListParse (consistency w/
virDomainSnapshotObjListFormat)
> void virDomainSnapshotDefFree(virDomainSnapshotDefPtr def);
> char *virDomainSnapshotDefFormat(const char *uuidstr,
> virDomainSnapshotDefPtr def,
> diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c
> index 963dc10247..61e26726e9 100644
> --- a/src/conf/snapshot_conf.c
> +++ b/src/conf/snapshot_conf.c
> @@ -426,6 +426,141 @@ virDomainSnapshotDefParseString(const char *xmlStr,
> }
>
>
> +int virDomainSnapshotDefParseList(const char *xmlStr,
> + const unsigned char *domain_uuid,
> + virDomainSnapshotObjListPtr snapshots,
> + virDomainSnapshotObjPtr *current_snap,
> + virCapsPtr caps,
> + virDomainXMLOptionPtr xmlopt,
> + unsigned int flags)
int
virDomainSnapshotObjListParse(...)
> +{
> + int ret = -1;
> + xmlDocPtr xml;
> + xmlNodePtr root;
> + xmlXPathContextPtr ctxt = NULL;
> + char *current = NULL;
> + int n;
> + size_t i;
> + VIR_AUTOFREE(xmlNodePtr *) nodes = NULL;
> + int keepBlanksDefault = xmlKeepBlanksDefault(0);
VIR_AUTOFREE(char *) current = NULL;
Typically it's been requested to keep all the VIR_AUTO* at the end of
arguments... Of course beyond the one change Peter decided not to
re-open his editor to modify after review comment requested otherwise.
[...]
> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
> index c623737c30..96f54a97fe 100644
> --- a/src/libvirt_private.syms
> +++ b/src/libvirt_private.syms
> @@ -881,6 +881,7 @@ virDomainSnapshotAssignDef;
> virDomainSnapshotDefFormat;
> virDomainSnapshotDefFree;
> virDomainSnapshotDefIsExternal;
> +virDomainSnapshotDefParseList;
virDomainSnapshotObjListParse;
> virDomainSnapshotDefParseString;
> virDomainSnapshotDropParent;
> virDomainSnapshotFindByName;
>
Simple enough adjustments...
Reviewed-by: John Ferlan <jferlan@xxxxxxxxxx>
John
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