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virDomainSnapshotAlignDisks: Add 'domdef' local variable 

There are multiple places accessing the domain definition. Extract it to
a local variable so that it's more clear what's happening.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2020-09-21 18:27:37 +02:00
parent ec725d31bd
commit e2f1919907
1 changed files with 14 additions and 13 deletions
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27
src/conf/snapshot_conf.c
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@ -649,33 +649,34 @@ virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr snapdef,
int default_snapshot,
bool require_match)
{
virDomainDefPtr domdef = snapdef->parent.dom;
g_autoptr(virBitmap) map = NULL;
size_t i;
int ndisks;
if (!snapdef->parent.dom) {
if (!domdef) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing domain in snapshot"));
return -1;
}
if (snapdef->ndisks > snapdef->parent.dom->ndisks) {
if (snapdef->ndisks > domdef->ndisks) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("too many disk snapshot requests for domain"));
return -1;
}
/* Unlikely to have a guest without disks but technically possible. */
if (!snapdef->parent.dom->ndisks)
if (!domdef->ndisks)
return 0;
if (!(map = virBitmapNew(snapdef->parent.dom->ndisks)))
if (!(map = virBitmapNew(domdef->ndisks)))
return -1;
/* Double check requested disks. */
for (i = 0; i < snapdef->ndisks; i++) {
virDomainSnapshotDiskDefPtr snapdisk = &snapdef->disks[i];
int idx = virDomainDiskIndexByName(snapdef->parent.dom, snapdisk->name, false);
int idx = virDomainDiskIndexByName(domdef, snapdisk->name, false);
int disk_snapshot;
if (idx < 0) {
@ -693,7 +694,7 @@ virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr snapdef,
ignore_value(virBitmapSetBit(map, idx));
snapdisk->idx = idx;
disk_snapshot = snapdef->parent.dom->disks[idx]->snapshot;
disk_snapshot = domdef->disks[idx]->snapshot;
if (!snapdisk->snapshot) {
if (disk_snapshot &&
(!require_match ||
@ -721,33 +722,33 @@ virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr snapdef,
snapdisk->src->path, snapdisk->name);
return -1;
}
if (STRNEQ(snapdisk->name, snapdef->parent.dom->disks[idx]->dst)) {
if (STRNEQ(snapdisk->name, domdef->disks[idx]->dst)) {
VIR_FREE(snapdisk->name);
snapdisk->name = g_strdup(snapdef->parent.dom->disks[idx]->dst);
snapdisk->name = g_strdup(domdef->disks[idx]->dst);
}
}
/* Provide defaults for all remaining disks. */
ndisks = snapdef->ndisks;
if (VIR_EXPAND_N(snapdef->disks, snapdef->ndisks,
snapdef->parent.dom->ndisks - snapdef->ndisks) < 0)
domdef->ndisks - snapdef->ndisks) < 0)
return -1;
for (i = 0; i < snapdef->parent.dom->ndisks; i++) {
for (i = 0; i < domdef->ndisks; i++) {
virDomainSnapshotDiskDefPtr snapdisk;
if (virBitmapIsBitSet(map, i))
continue;
snapdisk = &snapdef->disks[ndisks++];
snapdisk->src = virStorageSourceNew();
snapdisk->name = g_strdup(snapdef->parent.dom->disks[i]->dst);
snapdisk->name = g_strdup(domdef->disks[i]->dst);
snapdisk->idx = i;
/* Don't snapshot empty drives */
if (virStorageSourceIsEmpty(snapdef->parent.dom->disks[i]->src))
if (virStorageSourceIsEmpty(domdef->disks[i]->src))
snapdisk->snapshot = VIR_DOMAIN_SNAPSHOT_LOCATION_NONE;
else
snapdisk->snapshot = snapdef->parent.dom->disks[i]->snapshot;
snapdisk->snapshot = domdef->disks[i]->snapshot;
snapdisk->src->type = VIR_STORAGE_TYPE_FILE;
if (!snapdisk->snapshot)