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qemu_snapshot: create: move XML def validation to separate function

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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Pavel Hrdina 2021-11-03 10:53:12 +01:00
parent 87d4fa71d3
commit 061a395394
1 changed files with 77 additions and 63 deletions
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140
src/qemu/qemu_snapshot.c
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@ -1554,6 +1554,82 @@ qemuSnapshotCreateXMLParse(virDomainObj *vm,
}
static int
qemuSnapshotCreateXMLValidateDef(virDomainObj *vm,
virDomainSnapshotDef *def,
unsigned int flags)
{
bool redefine = flags & VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE;
virDomainSnapshotState state;
/* reject snapshot names containing slashes or starting with dot as
* snapshot definitions are saved in files named by the snapshot name */
if (!(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA)) {
if (strchr(def->parent.name, '/')) {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't contain '/'"),
def->parent.name);
return -1;
}
if (def->parent.name[0] == '.') {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't start with '.'"),
def->parent.name);
return -1;
}
}
/* reject the VIR_DOMAIN_SNAPSHOT_CREATE_LIVE flag where not supported */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_LIVE &&
(!virDomainObjIsActive(vm) ||
def->memory != VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("live snapshot creation is supported only "
"during full system snapshots"));
return -1;
}
/* allow snapshots only in certain states */
state = redefine ? def->state : vm->state.state;
switch (state) {
/* valid states */
case VIR_DOMAIN_SNAPSHOT_RUNNING:
case VIR_DOMAIN_SNAPSHOT_PAUSED:
case VIR_DOMAIN_SNAPSHOT_SHUTDOWN:
case VIR_DOMAIN_SNAPSHOT_SHUTOFF:
case VIR_DOMAIN_SNAPSHOT_CRASHED:
break;
case VIR_DOMAIN_SNAPSHOT_DISK_SNAPSHOT:
if (!redefine) {
virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
virDomainSnapshotStateTypeToString(state));
return -1;
}
break;
case VIR_DOMAIN_SNAPSHOT_PMSUSPENDED:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu doesn't support taking snapshots of "
"PMSUSPENDED guests"));
return -1;
/* invalid states */
case VIR_DOMAIN_SNAPSHOT_NOSTATE:
case VIR_DOMAIN_SNAPSHOT_BLOCKED: /* invalid state, unused in qemu */
case VIR_DOMAIN_SNAPSHOT_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
virDomainSnapshotStateTypeToString(state));
return -1;
}
return 0;
}
virDomainSnapshotPtr
qemuSnapshotCreateXML(virDomainPtr domain,
virDomainObj *vm,
@ -1571,7 +1647,6 @@ qemuSnapshotCreateXML(virDomainPtr domain,
bool align_match = true;
g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivate *priv = vm->privateData;
virDomainSnapshotState state;
g_autoptr(virDomainSnapshotDef) def = NULL;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE |
@ -1608,69 +1683,8 @@ qemuSnapshotCreateXML(virDomainPtr domain,
if (!(def = qemuSnapshotCreateXMLParse(vm, driver, xmlDesc, flags)))
return NULL;
/* reject snapshot names containing slashes or starting with dot as
* snapshot definitions are saved in files named by the snapshot name */
if (!(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA)) {
if (strchr(def->parent.name, '/')) {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't contain '/'"),
def->parent.name);
return NULL;
}
if (def->parent.name[0] == '.') {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't start with '.'"),
def->parent.name);
return NULL;
}
}
/* reject the VIR_DOMAIN_SNAPSHOT_CREATE_LIVE flag where not supported */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_LIVE &&
(!virDomainObjIsActive(vm) ||
def->memory != VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("live snapshot creation is supported only "
"during full system snapshots"));
if (qemuSnapshotCreateXMLValidateDef(vm, def, flags) < 0)
return NULL;
}
/* allow snapshots only in certain states */
state = redefine ? def->state : vm->state.state;
switch (state) {
/* valid states */
case VIR_DOMAIN_SNAPSHOT_RUNNING:
case VIR_DOMAIN_SNAPSHOT_PAUSED:
case VIR_DOMAIN_SNAPSHOT_SHUTDOWN:
case VIR_DOMAIN_SNAPSHOT_SHUTOFF:
case VIR_DOMAIN_SNAPSHOT_CRASHED:
break;
case VIR_DOMAIN_SNAPSHOT_DISK_SNAPSHOT:
if (!redefine) {
virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
virDomainSnapshotStateTypeToString(state));
return NULL;
}
break;
case VIR_DOMAIN_SNAPSHOT_PMSUSPENDED:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu doesn't support taking snapshots of "
"PMSUSPENDED guests"));
return NULL;
/* invalid states */
case VIR_DOMAIN_SNAPSHOT_NOSTATE:
case VIR_DOMAIN_SNAPSHOT_BLOCKED: /* invalid state, unused in qemu */
case VIR_DOMAIN_SNAPSHOT_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
virDomainSnapshotStateTypeToString(state));
return NULL;
}
/* We are going to modify the domain below. Internal snapshots would use
* a regular job, so we need to set the job mask to disallow query as