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snapshot: implement snapshot roots listing in vbox

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Commit 9f5e53e introduced the ability to filter snapshots to
just roots, but it was never implemented for VBox until now.

The VBox implementation prohibits deletion of a snapshot with
multiple children.  Hence, there can only be at most one root,
which is found by searching for the snapshot with a NULL uuid.

Prior to 4.0, snapshotGet looked up by UUID, and snapshotFind
looked up by name; after that point, snapshotGet disappeared
and snapshotFind handles uuid or name.

* src/vbox/vbox_tmpl.c (vboxDomainSnapshotNum)
(vboxDomainSnapshotListNames): Implement limiting list to root.
This commit is contained in:
Eric Blake 2011-10-03 15:20:25 -06:00
parent fcd2bd55d7
commit 869b69ea3d
1 changed files with 32 additions and 5 deletions
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37
src/vbox/vbox_tmpl.c
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@ -5871,7 +5871,8 @@ vboxDomainSnapshotNum(virDomainPtr dom,
nsresult rc;
PRUint32 snapshotCount;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_METADATA, -1);
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_ROOTS |
VIR_DOMAIN_SNAPSHOT_LIST_METADATA, -1);
vboxIIDFromUUID(&iid, dom->uuid);
rc = VBOX_OBJECT_GET_MACHINE(iid.value, &machine);
@ -5895,7 +5896,11 @@ vboxDomainSnapshotNum(virDomainPtr dom,
goto cleanup;
}
ret = snapshotCount;
/* VBox has at most one root snapshot. */
if (snapshotCount && (flags & VIR_DOMAIN_SNAPSHOT_LIST_ROOTS))
ret = 1;
else
ret = snapshotCount;
cleanup:
VBOX_RELEASE(machine);
@ -5917,7 +5922,8 @@ vboxDomainSnapshotListNames(virDomainPtr dom,
int count = 0;
int i;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_METADATA, -1);
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_ROOTS |
VIR_DOMAIN_SNAPSHOT_LIST_METADATA, -1);
vboxIIDFromUUID(&iid, dom->uuid);
rc = VBOX_OBJECT_GET_MACHINE(iid.value, &machine);
@ -5932,8 +5938,29 @@ vboxDomainSnapshotListNames(virDomainPtr dom,
goto cleanup;
}
if ((count = vboxDomainSnapshotGetAll(dom, machine, &snapshots)) < 0)
goto cleanup;
if (flags & VIR_DOMAIN_SNAPSHOT_LIST_ROOTS) {
vboxIID empty = VBOX_IID_INITIALIZER;
if (VIR_ALLOC_N(snapshots, 1) < 0) {
virReportOOMError();
goto cleanup;
}
#if VBOX_API_VERSION < 4000
rc = machine->vtbl->GetSnapshot(machine, empty.value, snapshots);
#else /* VBOX_API_VERSION >= 4000 */
rc = machine->vtbl->FindSnapshot(machine, empty.value, snapshots);
#endif /* VBOX_API_VERSION >= 4000 */
if (NS_FAILED(rc) || !snapshots[0]) {
vboxError(VIR_ERR_INTERNAL_ERROR,
_("could not get root snapshot for domain %s"),
dom->name);
goto cleanup;
}
count = 1;
} else {
if ((count = vboxDomainSnapshotGetAll(dom, machine, &snapshots)) < 0)
goto cleanup;
}
for (i = 0; i < nameslen; i++) {
PRUnichar *nameUtf16;