Re: [libvirt] [PATCH v6 4/9] backup: Introduce virDomainCheckpointPtr

Prepare for introducing a bunch of new public APIs related to backup checkpoints by first introducing a new internal type and errors associated with that type. Checkpoints are modeled heavily after virDomainSnapshotPtr (both represent a point in time of the guest), although a snapshot exists with the intent of rolling back to that state, while a checkpoint exists to make it possible to create an incremental backup at a later time. Signed-off-by: Eric Blake <eblake(a)redhat.com&gt; Reviewed-by: John Ferlan <jferlan(a)redhat.com&gt; --- include/libvirt/virterror.h | 7 +++-- src/util/virerror.c | 12 ++++++- include/libvirt/libvirt.h | 6 +++- src/datatypes.h | 33 ++++++++++++++++++- src/datatypes.c | 63 ++++++++++++++++++++++++++++++++++++- src/libvirt_private.syms | 2 ++ 6 files changed, 117 insertions(+), 6 deletions(-)