Re: [libvirt] [PATCH 3/8] 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; --- include/libvirt/libvirt-domain-snapshot.h | 8 ++-- include/libvirt/libvirt.h | 2 + include/libvirt/virterror.h | 5 ++- src/datatypes.c | 62 ++++++++++++++++++++++++++++++- src/datatypes.h | 31 +++++++++++++++- src/libvirt_private.syms | 2 + src/util/virerror.c | 15 +++++++- 7 files changed, 118 insertions(+), 7 deletions(-) diff --git a/include/libvirt/libvirt-domain-snapshot.h b/include/libvirt/libvirt-domain-snapshot.h index e5a893a767..ff1e890cfc 100644 --- a/include/libvirt/libvirt-domain-snapshot.h +++ b/include/libvirt/libvirt-domain-snapshot.h @@ -31,15 +31,17 @@ /** * virDomainSnapshot: * - * a virDomainSnapshot is a private structure representing a snapshot of - * a domain. + * A virDomainSnapshot is a private structure representing a snapshot of + * a domain. A snapshot captures the state of the domain at a point in + * time, with the intent that the guest can be reverted back to that + * state at a later time. */ typedef struct _virDomainSnapshot virDomainSnapshot; /** * virDomainSnapshotPtr: * - * a virDomainSnapshotPtr is pointer to a virDomainSnapshot private structure, + * A virDomainSnapshotPtr is pointer to a virDomainSnapshot private structure, * and is the type used to reference a domain snapshot in the API. */ typedef virDomainSnapshot *virDomainSnapshotPtr;

diff --git a/src/util/virerror.c b/src/util/virerror.c index 93632dbdf7..1e6fd77abf 100644 --- a/src/util/virerror.c +++ b/src/util/virerror.c @@ -1,7 +1,7 @@ /* * virerror.c: error handling and reporting code for libvirt * - * Copyright (C) 2006, 2008-2016 Red Hat, Inc. + * Copyright (C) 2006, 2008-2018 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -140,6 +140,7 @@ VIR_ENUM_IMPL(virErrorDomain, VIR_ERR_DOMAIN_LAST, "Perf", /* 65 */ "Libssh transport layer", "Resource control", + "Domain Checkpoint", ) @@ -1494,6 +1495,18 @@ virErrorMsg(virErrorNumber error, const char *info) else errmsg = _("device not found: %s"); break; + case VIR_ERR_INVALID_DOMAIN_CHECKPOINT: + if (info == NULL) + errmsg = _("Invalid checkpoint"); + else + errmsg = _("Invalid checkpoint: %s"); + break; + case VIR_ERR_NO_DOMAIN_CHECKPOINT: + if (info == NULL) + errmsg = _("Domain snapshot not found"); + else + errmsg = _("Domain snapshot not found: %s");

+ break; } return errmsg; }