Re: [libvirt] [PATCH] qemu_hotplug: use VIR_ERR_NO_DEVICE when target detaching device is not found

From: Chen Hanxiao <chenhanxiao(a)gmail.com&gt; We used VIR_ERR_OPERATION_FAILED when target detaching device is not found. That error code VIR_ERR_OPERATION_FAILED is widely used, so the tools powered by libvirt, such as nova, can't catch the exact errors from libvirt. This patch uses VIR_ERR_NO_DEVICE instead. Signed-off-by: Chen Hanxiao <chenhanxiao(a)gmail.com&gt; --- src/libvirt_private.syms | 2 ++ src/qemu/qemu_hotplug.c | 51 +++++++++++++++++++++++++++++++----------------- 2 files changed, 35 insertions(+), 18 deletions(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index d5c3b9abb..31e83f152 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -203,6 +203,7 @@ virDomainChrConsoleTargetTypeToString; virDomainChrDefForeach; virDomainChrDefFree; virDomainChrDefNew; +virDomainChrDeviceTypeToString; virDomainChrEquals; virDomainChrFind; virDomainChrGetDomainPtrs; @@ -427,6 +428,7 @@ virDomainMemoryDefFree; virDomainMemoryFindByDef; virDomainMemoryFindInactiveByDef; virDomainMemoryInsert; +virDomainMemoryModelTypeToString; virDomainMemoryRemove; virDomainMemorySourceTypeFromString; virDomainMemorySourceTypeToString; diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 7de04c85a..0fa3c54c0 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -3454,7 +3454,7 @@ qemuDomainChangeGraphics(virQEMUDriverPtr driver, int ret = -1; if (!olddev) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + virReportError(VIR_ERR_NO_DEVICE, "%s", _("cannot find existing graphics device to modify"));

goto cleanup; } @@ -4743,7 +4743,7 @@ int qemuDomainDetachControllerDevice(virQEMUDriverPtr driver, if ((idx = virDomainControllerFind(vm->def, dev->data.controller->type, dev->data.controller->idx)) < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("controller %s:%d not found"), virDomainControllerTypeToString(dev->data.controller->type), dev->data.controller->idx); @@ -4972,18 +4972,18 @@ int qemuDomainDetachHostDevice(virQEMUDriverPtr driver, if (idx < 0) { switch (subsys->type) { case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("host pci device %.4x:%.2x:%.2x.%.1x not found"), pcisrc->addr.domain, pcisrc->addr.bus, pcisrc->addr.slot, pcisrc->addr.function); break; case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: if (usbsrc->bus && usbsrc->device) { - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("host usb device %03d.%03d not found"), usbsrc->bus, usbsrc->device); } else { - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("host usb device vendor=0x%.4x product=0x%.4x not found"), usbsrc->vendor, usbsrc->product); } @@ -4992,13 +4992,13 @@ int qemuDomainDetachHostDevice(virQEMUDriverPtr driver, if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) { virDomainHostdevSubsysSCSIiSCSIPtr iscsisrc = &scsisrc->u.iscsi; - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("host scsi iSCSI path %s not found"), iscsisrc->src->path); } else { virDomainHostdevSubsysSCSIHostPtr scsihostsrc = &scsisrc->u.host; - virReportError(VIR_ERR_OPERATION_FAILED, + virReportError(VIR_ERR_NO_DEVICE, _("host scsi device %s:%u:%u.%llu not found"), scsihostsrc->adapter, scsihostsrc->bus, scsihostsrc->target, scsihostsrc->unit); @@ -5036,8 +5036,10 @@ qemuDomainDetachShmemDevice(virQEMUDriverPtr driver, qemuDomainObjPrivatePtr priv = vm->privateData; if ((idx = virDomainShmemDefFind(vm->def, dev)) < 0) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("device not present in domain configuration"));> + virReportError(VIR_ERR_NO_DEVICE, + _("Shmem device of model '%s' not found " + "in domain configuration"), + virDomainShmemModelTypeToString(dev->model));

return -1; } @@ -5093,8 +5095,10 @@ qemuDomainDetachWatchdog(virQEMUDriverPtr driver, watchdog->model == dev->model && watchdog->action == dev->action && virDomainDeviceInfoAddressIsEqual(&dev->info, &watchdog->info))) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("watchdog device not present in domain configuration")); + virReportError(VIR_ERR_NO_DEVICE, + _("watchdog device of model '%s' is not " + "found in domain configuration"), + virDomainWatchdogModelTypeToString(watchdog->model));

return -1; } @@ -5134,8 +5138,13 @@ qemuDomainDetachNetDevice(virQEMUDriverPtr driver, virDomainNetDefPtr detach = NULL; qemuDomainObjPrivatePtr priv = vm->privateData; - if ((detachidx = virDomainNetFindIdx(vm->def, dev->data.net)) < 0) + if ((detachidx = virDomainNetFindIdx(vm->def, dev->data.net)) < 0) { + char mac[VIR_MAC_STRING_BUFLEN]; + virReportError(VIR_ERR_NO_DEVICE, + _("netdev '%s' not found in domain configuration"), + virMacAddrFormat(&dev->data.net->mac, mac));

goto cleanup; + } detach = vm->def->nets[detachidx]; @@ -5321,8 +5330,10 @@ int qemuDomainDetachChrDevice(virQEMUDriverPtr driver, char *devstr = NULL; if (!(tmpChr = virDomainChrFind(vmdef, chr))) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("device not present in domain configuration")); + virReportError(VIR_ERR_NO_DEVICE, + _("Chr device of type '%s' not found " + "in domain configuration"), + virDomainChrDeviceTypeToString(chr->deviceType));

goto cleanup; } @@ -5368,8 +5379,10 @@ qemuDomainDetachRNGDevice(virQEMUDriverPtr driver, int ret = -1; if ((idx = virDomainRNGFind(vm->def, rng)) < 0) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("device not present in domain configuration")); + virReportError(VIR_ERR_NO_DEVICE, + _("RNG device of model '%s' not found " + "in domain configuration"), + virDomainRNGBackendTypeToString(rng->model));

return -1; } @@ -5411,8 +5424,10 @@ qemuDomainDetachMemoryDevice(virQEMUDriverPtr driver, qemuDomainMemoryDeviceAlignSize(vm->def, memdef); if ((idx = virDomainMemoryFindByDef(vm->def, memdef)) < 0) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("device not present in domain configuration")); + virReportError(VIR_ERR_NO_DEVICE, + _("memory device of model '%s' not found " + "in domain configuration"), + virDomainMemoryModelTypeToString(memdef->model));

return -1; }