[libvirt] [PATCH 1/3] snapshot: add qemu capability for 'transaction' command

We need a capability bit to gracefully error out if some of the additions in future patches can't be implemented by the running qemu. * src/qemu/qemu_capabilities.h (QEMU_CAPS_TRANSACTION): New cap. * src/qemu/qemu_capabilities.c (qemuCaps): Name it. * src/qemu/qemu_monitor_json.c (qemuMonitorJSONCheckCommands): Set it. --- I haven't yet decided if I need to check for 'block-mirror' as an independent capability, but that can be a later patch. src/qemu/qemu_capabilities.c | 1 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_monitor_json.c | 3 +++ 3 files changed, 5 insertions(+), 0 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index ace5011..0e09d6d 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -155,6 +155,7 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST, "system_wakeup", "scsi-disk.channel", "scsi-block", + "transaction", ); struct qemu_feature_flags { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 62b4270..78cdbe0 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -123,6 +123,7 @@ enum qemuCapsFlags { QEMU_CAPS_WAKEUP = 86, /* system_wakeup monitor command */ QEMU_CAPS_SCSI_DISK_CHANNEL = 87, /* Is scsi-disk.channel available? */ QEMU_CAPS_SCSI_BLOCK = 88, /* -device scsi-block */ + QEMU_CAPS_TRANSACTION = 89, /* transaction monitor command */ QEMU_CAPS_LAST, /* this must always be the last item */ }; diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index ce68e69..4dd6924 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -884,6 +884,9 @@ qemuMonitorJSONCheckCommands(qemuMonitorPtr mon, if (STREQ(name, "system_wakeup")) qemuCapsSet(qemuCaps, QEMU_CAPS_WAKEUP); + + if (STREQ(name, "transaction")) + qemuCapsSet(qemuCaps, QEMU_CAPS_TRANSACTION); } ret = 0; -- 1.7.7.6