Add a new function to output all of the domain's snapshots in one
buffer.
Signed-off-by: Eric Blake <eblake@xxxxxxxxxx>
Reviewed-by: John Ferlan <jferlan@xxxxxxxxxx>
---
src/conf/snapshot_conf.h | 9 +++++-
src/conf/snapshot_conf.c | 61 ++++++++++++++++++++++++++++++++++++++++
src/libvirt_private.syms | 1 +
3 files changed, 70 insertions(+), 1 deletion(-)
diff --git a/src/conf/snapshot_conf.h b/src/conf/snapshot_conf.h
index 1b8bdde4f5..69a7750b0b 100644
--- a/src/conf/snapshot_conf.h
+++ b/src/conf/snapshot_conf.h
@@ -1,7 +1,7 @@
/*
* snapshot_conf.h: domain snapshot XML processing
*
- * Copyright (C) 2006-2014 Red Hat, Inc.
+ * Copyright (C) 2006-2019 Red Hat, Inc.
* Copyright (C) 2006-2008 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
@@ -138,6 +138,13 @@ char *virDomainSnapshotDefFormat(const char *uuidstr,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
unsigned int flags);
+int virDomainSnapshotObjListFormat(virBufferPtr buf,
+ const char *uuidstr,
+ virDomainSnapshotObjListPtr snapshots,
+ virDomainSnapshotObjPtr current_snapshot,
+ virCapsPtr caps,
+ virDomainXMLOptionPtr xmlopt,
+ unsigned int flags);
int virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr snapshot,
int default_snapshot,
bool require_match);
diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c
index bceebb2b1f..5641e57e43 100644
--- a/src/conf/snapshot_conf.c
+++ b/src/conf/snapshot_conf.c
@@ -809,6 +809,67 @@ virDomainSnapshotDefFormat(const char *uuidstr,
return virBufferContentAndReset(&buf);
}
+
+/* Struct and callback function used as a hash table callback; each call
+ * appends another snapshot XML to buf, with the caller clearing the
+ * buffer if any callback fails. */
+struct virDomainSnapshotFormatData {
+ virBufferPtr buf;
+ const char *uuidstr;
+ virCapsPtr caps;
+ virDomainXMLOptionPtr xmlopt;
+ unsigned int flags;
+};
+
+static int
+virDomainSnapshotFormatOne(void *payload,
+ const void *name ATTRIBUTE_UNUSED,
+ void *opaque)
+{
+ virDomainSnapshotObjPtr snap = payload;
+ struct virDomainSnapshotFormatData *data = opaque;
+ return virDomainSnapshotDefFormatInternal(data->buf, data->uuidstr,
+ snap->def, data->caps,
+ data->xmlopt, data->flags);
+}
+
+
+/* Format the XML for all snapshots in the list into buf. On error,
+ * clear the buffer and return -1. */
+int
+virDomainSnapshotObjListFormat(virBufferPtr buf,
+ const char *uuidstr,
+ virDomainSnapshotObjListPtr snapshots,
+ virDomainSnapshotObjPtr current_snapshot,
+ virCapsPtr caps,
+ virDomainXMLOptionPtr xmlopt,
+ unsigned int flags)
+{
+ struct virDomainSnapshotFormatData data = {
+ .buf = buf,
+ .uuidstr = uuidstr,
+ .caps = caps,
+ .xmlopt = xmlopt,
+ .flags = flags,
+ };
+
+ virBufferAddLit(buf, "<snapshots");
+ if (current_snapshot)
+ virBufferEscapeString(buf, " current='%s'",
+ current_snapshot->def->name);
+ virBufferAddLit(buf, ">\n");
+ virBufferAdjustIndent(buf, 2);
+ if (virDomainSnapshotForEach(snapshots, virDomainSnapshotFormatOne,
+ &data) < 0) {
+ virBufferFreeAndReset(buf);
+ return -1;
+ }
+ virBufferAdjustIndent(buf, -2);
+ virBufferAddLit(buf, "</snapshots>\n");
+ return 0;
+}
+
+
/* Snapshot Obj functions */
static virDomainSnapshotObjPtr virDomainSnapshotObjNew(void)
{
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 7ce7c85b55..35e0c6d9dc 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -894,6 +894,7 @@ virDomainSnapshotFormatConvertXMLFlags;
virDomainSnapshotIsExternal;
virDomainSnapshotLocationTypeFromString;
virDomainSnapshotLocationTypeToString;
+virDomainSnapshotObjListFormat;
virDomainSnapshotObjListFree;
virDomainSnapshotObjListGetNames;
virDomainSnapshotObjListNew;
--
2.20.1
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