Re: [libvirt] [PATCHv6 0/5] Handling of undefine and redefine snapshots with VirtualBox 4.2

Hi, This is a serie of patches in order to support undefining and redefining snapshots with VirtualBox 4.2. The serie of patches is rather big, and adds among other things some utility functions unrelated to VirtualBox in patches 1 & 2. The code review could be done in several parts: e.g. patches 1 & 2 separately to validate the utility functions. The VirtualBox API provides only high level operations to manipulate snapshots, so it not possible to support flags like VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE and VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY with only API calls. Following an IRC talk with Eric Blake, the decision was taken to emulate these behaviours by manipulating directly the .vbox XML files. The first two patches are some util methods for handling regexp and strings that will be used after. The third patch brings more details in the snapshot XML returned by libvirt. We will need those modifications in order to redefine the snapshots. The fourth patch brings the support of the VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE and VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT flags in virDomainSnapshotCreateXML. The fifth and last patch brings the support of the VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY flag in virDomainSnapshotDelete. The patches are only tested with Virtualbox 4.2 but the code is compliant with Virtualbox 4.3 API. Regards, Manuel VIVES v6: * Rebased because of a massive change in vbox_tmpl.c due to changes in the handling of different versions of VirtualBox v5: * The patches are modified according to a first review by Laine Stump: * renamed virSearchUuid to virSearchRegex and moved it from viruuid.{c,h} to virstring.{c,h}. * Various fixes. V4: * The code is compliant with Virtualbox 4.3 API * Some minor modifications in order to satisfy "make syntax-check" V3: * Use of STREQ_NULLABLE instead of STREQ in one case * Fix the method for finding uuids according to Ján Tomko review V2: * Fix a licence problem with the method for string replacement Manuel VIVES (5): virstring.h/c: Util method for finding regexp patterns in some strings virstring.h/c: Util method for making some find and replace in strings vbox_tmpl.c: Better XML description for snapshots vbox_tmpl.c: Patch for redefining snapshots vbox_tmpl.c: Add methods for undefining snapshots po/POTFILES.in | 1 + src/libvirt_private.syms | 2 + src/util/virstring.c | 163 +++- src/util/virstring.h | 4 + src/vbox/vbox_tmpl.c | 2346 ++++++++++++++++++++++++++++++++++++++++++---- 5 files changed, 2346 insertions(+), 170 deletions(-)