Straight code motion, coupled with changing goto into return -1
as needed. This change will be important to later patches adding
bulk redefinition (where each snapshot in a list has to meet the
same constraints), but moving it out now also makes it easier
for a more immediate bug-fix related to which states are being
validated in the next patch.
Signed-off-by: Eric Blake <eblake@xxxxxxxxxx>
---
src/qemu/qemu_driver.c | 99 +++++++++++++++++++++++-------------------
1 file changed, 55 insertions(+), 44 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 4869096273..a8ac9b59ee 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -15673,6 +15673,59 @@ qemuDomainSnapshotCreateActiveExternal(virQEMUDriverPtr driver,
}
+/* Validate that a snapshot object does not violate any qemu-specific
+ * constraints. */
+static int
+qemuDomainSnapshotValidate(virDomainSnapshotDefPtr def, int state,
+ unsigned int flags)
+{
+ /* 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->name, '/')) {
+ virReportError(VIR_ERR_XML_DETAIL,
+ _("invalid snapshot name '%s': "
+ "name can't contain '/'"),
+ def->name);
+ return -1;
+ }
+
+ if (def->name[0] == '.') {
+ virReportError(VIR_ERR_XML_DETAIL,
+ _("invalid snapshot name '%s': "
+ "name can't start with '.'"),
+ def->name);
+ return -1;
+ }
+ }
+
+ /* allow snapshots only in certain states */
+ switch ((virDomainState) state) {
+ /* valid states */
+ case VIR_DOMAIN_RUNNING:
+ case VIR_DOMAIN_PAUSED:
+ case VIR_DOMAIN_SHUTDOWN:
+ case VIR_DOMAIN_SHUTOFF:
+ case VIR_DOMAIN_CRASHED:
+ break;
+
+ case VIR_DOMAIN_PMSUSPENDED:
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("qemu doesn't support taking snapshots of "
+ "PMSUSPENDED guests"));
+ return -1;
+
+ /* invalid states */
+ case VIR_DOMAIN_NOSTATE:
+ case VIR_DOMAIN_BLOCKED: /* invalid state, unused in qemu */
+ case VIR_DOMAIN_LAST:
+ virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
+ virDomainStateTypeToString(state));
+ return -1;
+ }
+ return 0;
+}
+
static virDomainSnapshotPtr
qemuDomainSnapshotCreateXML(virDomainPtr domain,
const char *xmlDesc,
@@ -15747,25 +15800,8 @@ qemuDomainSnapshotCreateXML(virDomainPtr domain,
parse_flags)))
goto cleanup;
- /* 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->name, '/')) {
- virReportError(VIR_ERR_XML_DETAIL,
- _("invalid snapshot name '%s': "
- "name can't contain '/'"),
- def->name);
- goto cleanup;
- }
-
- if (def->name[0] == '.') {
- virReportError(VIR_ERR_XML_DETAIL,
- _("invalid snapshot name '%s': "
- "name can't start with '.'"),
- def->name);
- goto cleanup;
- }
- }
+ if (qemuDomainSnapshotValidate(def, vm->state.state, flags) < 0)
+ goto cleanup;
/* reject the VIR_DOMAIN_SNAPSHOT_CREATE_LIVE flag where not supported */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_LIVE &&
@@ -15777,31 +15813,6 @@ qemuDomainSnapshotCreateXML(virDomainPtr domain,
goto cleanup;
}
- /* allow snapshots only in certain states */
- switch ((virDomainState) vm->state.state) {
- /* valid states */
- case VIR_DOMAIN_RUNNING:
- case VIR_DOMAIN_PAUSED:
- case VIR_DOMAIN_SHUTDOWN:
- case VIR_DOMAIN_SHUTOFF:
- case VIR_DOMAIN_CRASHED:
- break;
-
- case VIR_DOMAIN_PMSUSPENDED:
- virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
- _("qemu doesn't support taking snapshots of "
- "PMSUSPENDED guests"));
- goto cleanup;
-
- /* invalid states */
- case VIR_DOMAIN_NOSTATE:
- case VIR_DOMAIN_BLOCKED: /* invalid state, unused in qemu */
- case VIR_DOMAIN_LAST:
- virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
- virDomainStateTypeToString(vm->state.state));
- goto cleanup;
- }
-
/* 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
* 'savevm' blocks the monitor. External snapshot will then modify the
--
2.20.1
--
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