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[libvirt] [PATCH V2] xen: check if device is assigned to guest before reattaching
by Yufang Zhang 27 Apr '11

27 Apr '11

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=664059 This is the version2 patch for BZ#664059. Reattaching pci device back to host without destroying guest or detaching device from guest would cause host to crash. This patch adds a check before doing device reattach. If the device is being assigned to guest, libvirt refuses to reattach device to host. The patch only works for Xen, for it just checks xenstore to get pci device information. Signed-off-by: Yufang Zhang <yuzhang(a)redhat.com> --- src/xen/xen_driver.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 67 insertions(+), 0 deletions(-) diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c index 4c11b11..318bb6a 100644 --- a/src/xen/xen_driver.c +++ b/src/xen/xen_driver.c @@ -1891,11 +1891,70 @@ out: } static int +xenUnifiedNodeDeviceAssignedDomainId (virNodeDevicePtr dev) +{ + int numdomains; + int ret = -1, i; + int *ids = NULL; + char *bdf = NULL; + char *xref = NULL; + unsigned int domain, bus, slot, function; + virConnectPtr conn = dev->conn; + xenUnifiedPrivatePtr priv = conn->privateData; + + /* Get active domains */ + numdomains = xenUnifiedNumOfDomains(conn); + if (numdomains < 0) { + return ret; + } + if (numdomains > 0){ + if (VIR_ALLOC_N(ids, numdomains) < 0){ + virReportOOMError(); + goto out; + } + if ((numdomains = xenUnifiedListDomains(conn, &ids[0], numdomains)) < 0){ + goto out; + } + } + + /* Get pci bdf */ + if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0) + goto out; + + if (virAsprintf(&bdf, "%04x:%02x:%02x.%0x", + domain, bus, slot, function) < 0) { + virReportOOMError(); + goto out; + } + + /* Check if bdf is assigned to one of active domains */ + for (i = 0; i < numdomains; i++ ){ + xenUnifiedLock(priv); + xref = xenStoreDomainGetPCIID(conn, ids[i], bdf); + xenUnifiedUnlock(priv); + if (xref == NULL) + continue; + else { + ret = ids[i]; + break; + } + } + + VIR_FREE(xref); + VIR_FREE(bdf); +out: + VIR_FREE(ids); + + return ret; +} + +static int xenUnifiedNodeDeviceReAttach (virNodeDevicePtr dev) { pciDevice *pci; unsigned domain, bus, slot, function; int ret = -1; + int domid; if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0) return -1; @@ -1904,6 +1963,14 @@ xenUnifiedNodeDeviceReAttach (virNodeDevicePtr dev) if (!pci) return -1; + /* Check if device is assigned to an active guest */ + if ((domid = xenUnifiedNodeDeviceAssignedDomainId(dev)) >= 0){ + xenUnifiedError(VIR_ERR_INTERNAL_ERROR, + _("Device %s has been assigned to guest %d"), + dev->name, domid); + goto out; + } + if (pciReAttachDevice(pci, NULL) < 0) goto out; -- 1.7.3.4

2 2

[libvirt] [PATCH] qemu: Add option to enable/disable IOEventFD feature
by Michal Privoznik 27 Apr '11

27 Apr '11

This feature allows QEMU to achieve higher throughput, but is available only in recent versions. It is accessible via ioeventfd attribute with accepting values 'on', 'off'. Only experienced users needs to set this, because QEMU defaults to 'on', meaning higher performance. Translates into virtio-{blk|net}-pci.ioeventfd option. --- docs/formatdomain.html.in | 15 ++++++++++++- docs/schemas/domain.rng | 14 +++++++++++++ src/conf/domain_conf.c | 44 +++++++++++++++++++++++++++++++++++++++++- src/conf/domain_conf.h | 12 +++++++++++ src/libvirt_private.syms | 2 + src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 23 +++++++++++++++++++++ tests/qemuhelptest.c | 3 +- 9 files changed, 112 insertions(+), 4 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index a055b38..409b26a 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -751,7 +751,7 @@ </disk> ... <disk type='network'> - <driver name="qemu" type="raw" io="threads"/> + <driver name="qemu" type="raw" io="threads" ioeventfd="on"/> <source protocol="sheepdog" name="image_name"> <host name="hostname" port="7000"/> </source> @@ -835,6 +835,11 @@ policies on I/O; qemu guests support "threads" and "native". Since 0.8.8 </li> + <li> + The optional <code>ioeventfd</code> attribute enables or disables + IOEventFD feature for virtqueue notify. The value can be either + 'on' or 'off'. + Since 0.9.0 (QEMU and KVM only) </ul> </dd> <dt><code>boot</code></dt> @@ -1458,7 +1463,7 @@ qemu-kvm -net nic,model=? /dev/null <source network='default'/> <target dev='vnet1'/> <model type='virtio'/> - <driver name='vhost' txmode='iothread'/> + <driver name='vhost' txmode='iothread' ioeventfd='on'/> </interface> </devices> ...</pre> @@ -1509,6 +1514,12 @@ qemu-kvm -net nic,model=? /dev/null In general you should leave this option alone, unless you are very certain you know what you are doing. </dd> + <dt><code>ioeventfd</code><code></dt> + <dd> + This optional attribute allows users to enable or disable IOeventFD + feature for virtqueue notify. The value can be either 'on' or 'off'. + Since 0.9.0 (QEMU and KVM only) + </dd> </dl> <h5><a name="elementsNICSTargetOverride">Overriding the target element</a></h5> diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng index 7163c6e..c3e8e15 100644 --- a/docs/schemas/domain.rng +++ b/docs/schemas/domain.rng @@ -735,6 +735,9 @@ <optional> <ref name="driverIO"/> </optional> + <optional> + <ref name="ioeventfd"/> + </optional> <empty/> </element> </define> @@ -774,6 +777,14 @@ </choice> </attribute> </define> + <define name="ioeventfd"> + <attribute name="ioeventfd"> + <choice> + <value>on</value> + <value>off</value> + </choice> + </attribute> + </define> <define name="controller"> <element name="controller"> <choice> @@ -1074,6 +1085,9 @@ </choice> </attribute> </optional> + <optional> + <ref name="ioeventfd"/> + </optional> <empty/> </element> </optional> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0e7aeb5..2aca162 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -155,6 +155,11 @@ VIR_ENUM_IMPL(virDomainDiskIo, VIR_DOMAIN_DISK_IO_LAST, "native", "threads") +VIR_ENUM_IMPL(virDomainVirtioEventFd, VIR_DOMAIN_VIRTIO_EVENT_FD_LAST, + "default", + "on", + "off") + VIR_ENUM_IMPL(virDomainController, VIR_DOMAIN_CONTROLLER_TYPE_LAST, "ide", "fdc", @@ -1829,6 +1834,7 @@ virDomainDiskDefParseXML(virCapsPtr caps, char *cachetag = NULL; char *error_policy = NULL; char *iotag = NULL; + char *ioeventfd = NULL; char *devaddr = NULL; virStorageEncryptionPtr encryption = NULL; char *serial = NULL; @@ -1944,6 +1950,7 @@ virDomainDiskDefParseXML(virCapsPtr caps, cachetag = virXMLPropString(cur, "cache"); error_policy = virXMLPropString(cur, "error_policy"); iotag = virXMLPropString(cur, "io"); + ioeventfd = virXMLPropString(cur, "ioeventfd"); } else if (xmlStrEqual(cur->name, BAD_CAST "readonly")) { def->readonly = 1; } else if (xmlStrEqual(cur->name, BAD_CAST "shareable")) { @@ -2080,6 +2087,18 @@ virDomainDiskDefParseXML(virCapsPtr caps, } } + if (ioeventfd) { + int i; + if ((i = virDomainVirtioEventFdTypeFromString(ioeventfd)) <= 0) { + virDomainReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("unknown disk ioeventfd mode '%s'"), + ioeventfd); + goto error; + } + def->ioeventfd = i; + } + + if (devaddr) { if (virDomainParseLegacyDeviceAddress(devaddr, &def->info.addr.pci) < 0) { @@ -2142,6 +2161,7 @@ cleanup: VIR_FREE(cachetag); VIR_FREE(error_policy); VIR_FREE(iotag); + VIR_FREE(ioeventfd); VIR_FREE(devaddr); VIR_FREE(serial); virStorageEncryptionFree(encryption); @@ -2529,6 +2549,7 @@ virDomainNetDefParseXML(virCapsPtr caps, char *model = NULL; char *backend = NULL; char *txmode = NULL; + char *ioeventfd = NULL; char *filter = NULL; char *internal = NULL; char *devaddr = NULL; @@ -2618,6 +2639,7 @@ virDomainNetDefParseXML(virCapsPtr caps, } else if (xmlStrEqual (cur->name, BAD_CAST "driver")) { backend = virXMLPropString(cur, "name"); txmode = virXMLPropString(cur, "txmode"); + ioeventfd = virXMLPropString(cur, "ioeventfd"); } else if (xmlStrEqual (cur->name, BAD_CAST "filterref")) { filter = virXMLPropString(cur, "filter"); VIR_FREE(filterparams); @@ -2834,6 +2856,17 @@ virDomainNetDefParseXML(virCapsPtr caps, } def->driver.virtio.txmode = m; } + if (ioeventfd != NULL) { + int i; + if ((i = virDomainVirtioEventFdTypeFromString(ioeventfd)) <= 0) { + virDomainReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("unknown interface <driver " + "ioeventfd='%s'> has been specified"), + ioeventfd); + goto error; + } + def->driver.virtio.ioeventfd = i; + } } if (filter != NULL) { @@ -2873,6 +2906,7 @@ cleanup: VIR_FREE(model); VIR_FREE(backend); VIR_FREE(txmode); + VIR_FREE(ioeventfd); VIR_FREE(filter); VIR_FREE(type); VIR_FREE(internal); @@ -6910,6 +6944,7 @@ virDomainDiskDefFormat(virBufferPtr buf, const char *cachemode = virDomainDiskCacheTypeToString(def->cachemode); const char *error_policy = virDomainDiskErrorPolicyTypeToString(def->error_policy); const char *iomode = virDomainDiskIoTypeToString(def->iomode); + const char *ioeventfd = virDomainVirtioEventFdTypeToString(def->ioeventfd); if (!type) { virDomainReportError(VIR_ERR_INTERNAL_ERROR, @@ -6941,7 +6976,8 @@ virDomainDiskDefFormat(virBufferPtr buf, " <disk type='%s' device='%s'>\n", type, device); - if (def->driverName || def->driverType || def->cachemode) { + if (def->driverName || def->driverType || def->cachemode || + def->ioeventfd) { virBufferVSprintf(buf, " <driver"); if (def->driverName) virBufferVSprintf(buf, " name='%s'", def->driverName); @@ -6953,6 +6989,8 @@ virDomainDiskDefFormat(virBufferPtr buf, virBufferVSprintf(buf, " error_policy='%s'", error_policy); if (def->iomode) virBufferVSprintf(buf, " io='%s'", iomode); + if (def->ioeventfd) + virBufferVSprintf(buf, " ioeventfd='%s'", ioeventfd); virBufferVSprintf(buf, "/>\n"); } @@ -7243,6 +7281,10 @@ virDomainNetDefFormat(virBufferPtr buf, virBufferVSprintf(buf, " txmode='%s'", virDomainNetVirtioTxModeTypeToString(def->driver.virtio.txmode)); } + if (def->driver.virtio.ioeventfd) { + virBufferVSprintf(buf, " ioeventfd='%s'", + virDomainVirtioEventFdTypeToString(def->driver.virtio.ioeventfd)); + } virBufferAddLit(buf, "/>\n"); } } diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 6ea30b9..42ca601 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -197,6 +197,15 @@ enum virDomainDiskIo { VIR_DOMAIN_DISK_IO_LAST }; +enum virDomainVirtioEventFd { + VIR_DOMAIN_VIRTIO_EVENT_FD_DEFAULT = 0, + VIR_DOMAIN_VIRTIO_EVENT_FD_ON, + VIR_DOMAIN_VIRTIO_EVENT_FD_OFF, + + VIR_DOMAIN_VIRTIO_EVENT_FD_LAST +}; + + /* Stores the virtual disk configuration */ typedef struct _virDomainDiskDef virDomainDiskDef; typedef virDomainDiskDef *virDomainDiskDefPtr; @@ -216,6 +225,7 @@ struct _virDomainDiskDef { int error_policy; int bootIndex; int iomode; + enum virDomainVirtioEventFd ioeventfd; unsigned int readonly : 1; unsigned int shared : 1; virDomainDeviceInfo info; @@ -351,6 +361,7 @@ struct _virDomainNetDef { struct { enum virDomainNetBackendType name; /* which driver backend to use */ enum virDomainNetVirtioTxModeType txmode; + enum virDomainVirtioEventFd ioeventfd; } virtio; } driver; union { @@ -1439,6 +1450,7 @@ VIR_ENUM_DECL(virDomainDiskCache) VIR_ENUM_DECL(virDomainDiskErrorPolicy) VIR_ENUM_DECL(virDomainDiskProtocol) VIR_ENUM_DECL(virDomainDiskIo) +VIR_ENUM_DECL(virDomainVirtioEventFd) VIR_ENUM_DECL(virDomainController) VIR_ENUM_DECL(virDomainControllerModel) VIR_ENUM_DECL(virDomainFS) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 3d53287..1bd90a1 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -338,6 +338,8 @@ virDomainVideoDefaultType; virDomainVideoTypeFromString; virDomainVideoTypeToString; virDomainVirtTypeToString; +virDomainVirtioEventFdTypeFromString; +virDomainVirtioEventFdTypeToString; virDomainWatchdogActionTypeFromString; virDomainWatchdogActionTypeToString; virDomainWatchdogModelTypeFromString; diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 63486cc..6e8aa50 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -1124,6 +1124,8 @@ qemuCapsParseDeviceStr(const char *str, virBitmapPtr flags) qemuCapsSet(flags, QEMU_CAPS_VIRTIO_TX_ALG); if (strstr(str, "name \"qxl-vga\"")) qemuCapsSet(flags, QEMU_CAPS_DEVICE_QXL_VGA); + if (strstr(str, "virtio-blk-pci.ioeventfd")) + qemuCapsSet(flags, QEMU_CAPS_VIRTIO_IOEVENTFD); return 0; } diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 68c5958..400d73c 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -95,6 +95,7 @@ enum qemuCapsFlags { QEMU_CAPS_DEVICE_SPICEVMC = 57, /* older -device spicevmc*/ QEMU_CAPS_VIRTIO_TX_ALG = 58, /* -device virtio-net-pci,tx=string */ QEMU_CAPS_DEVICE_QXL_VGA = 59, /* Is the primary and vga campatible qxl device named qxl-vga? */ + QEMU_CAPS_VIRTIO_IOEVENTFD = 60, /* IOEventFD feature: virtio-{net|blk}-pci.ioeventfd=on/off */ QEMU_CAPS_LAST, /* this must always be the last item */ }; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 2205ed1..41b4fdd 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1169,6 +1169,26 @@ qemuBuildDeviceAddressStr(virBufferPtr buf, return 0; } +static int +qemuBuildIoEventFdStr(virBufferPtr buf, + enum virDomainVirtioEventFd use, + virBitmapPtr qemuCaps) +{ + if (qemuCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_IOEVENTFD)) { + switch (use) { + case VIR_DOMAIN_VIRTIO_EVENT_FD_ON: + case VIR_DOMAIN_VIRTIO_EVENT_FD_OFF: + virBufferVSprintf(buf, ",ioeventfd=%s", + virDomainVirtioEventFdTypeToString(use)); + break; + default: + /* In other cases (_DEFAULT, _LAST) we don't + * want to add anything */ + break; + } + } + return 0; +} #define QEMU_SERIAL_PARAM_ACCEPTED_CHARS \ "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_" @@ -1434,6 +1454,7 @@ qemuBuildDriveDevStr(virDomainDiskDefPtr disk, break; case VIR_DOMAIN_DISK_BUS_VIRTIO: virBufferAddLit(&opt, "virtio-blk-pci"); + qemuBuildIoEventFdStr(&opt, disk->ioeventfd, qemuCaps); qemuBuildDeviceAddressStr(&opt, &disk->info, qemuCaps); break; case VIR_DOMAIN_DISK_BUS_USB: @@ -1656,6 +1677,8 @@ qemuBuildNicDevStr(virDomainNetDefPtr net, goto error; } } + if(usingVirtio) + qemuBuildIoEventFdStr(&buf, net->driver.virtio.ioeventfd, qemuCaps); if (vlan == -1) virBufferVSprintf(&buf, ",netdev=host%s", net->info.alias); else diff --git a/tests/qemuhelptest.c b/tests/qemuhelptest.c index c86c578..776acf5 100644 --- a/tests/qemuhelptest.c +++ b/tests/qemuhelptest.c @@ -490,7 +490,8 @@ mymain(int argc, char **argv) QEMU_CAPS_CCID_PASSTHRU, QEMU_CAPS_CHARDEV_SPICEVMC, QEMU_CAPS_DEVICE_QXL_VGA, - QEMU_CAPS_VIRTIO_TX_ALG); + QEMU_CAPS_VIRTIO_TX_ALG, + QEMU_CAPS_VIRTIO_IOEVENTFD); return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; } -- 1.7.4.4

1 0

[libvirt] [PATCH v2 0/4] RFC: vcpupin: configure inactive domains' CPU affinity setting
by Taku Izumi 27 Apr '11

27 Apr '11

Hi all, This patchset enables us to configure inactive domains' CPU affinity setting. The basic technique is the same as that of "virsh setmem" command. => http://www.redhat.com/archives/libvir-list/2011-March/msg00013.html v1 -> v2: - recreate based on 0.9.0 - add "CURRENT" mode *[PATCH 1/4] vcpupin: inroduce a new libvir API (virDomainPinVcpuFlags) *[PATCH 2/4] vcpupin: implement the code to address the new API in the qemu driver *[PATCH 3/4] vcpupin: implement the remote protocol to address the new API *[PATCH 4/4] vcpupin: add the new options to "virsh vcpupin" command Best regards, Taku Izumi

4 14

[libvirt] [PATCH] esx: Fix dynamic dispatch for CastFromAnyType functions
by Matthias Bolte 27 Apr '11

27 Apr '11

This was broken by the refactoring in ac1e6586ec75. It resulted in a segfault for 'virsh vol-dumpxml' and related volume functions. Before the refactoring all users of the ESX_VI__TEMPLATE__DISPATCH macro dispatched on the item type, as the item is the input to all those functions. Commit ac1e6586ec75 made the dynamically dispatched CastFromAnyType functions use this macro too, but this functions dispatched on the actual type of the AnyType object. The item is the output of the CastFromAnyType functions. This difference was missed in the refactoring, making CastFromAnyType functions dereferencing the item pointer that is NULL at the time of the dispatch. --- src/esx/esx_vi_types.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/src/esx/esx_vi_types.c b/src/esx/esx_vi_types.c index dd83954..6a2d5cf 100644 --- a/src/esx/esx_vi_types.c +++ b/src/esx/esx_vi_types.c @@ -533,8 +533,8 @@ * Macros to implement dynamic dispatched functions */ -#define ESX_VI__TEMPLATE__DISPATCH(__type, _dispatch, _error_return) \ - switch (item->_type) { \ +#define ESX_VI__TEMPLATE__DISPATCH(_object, __type, _dispatch, _error_return) \ + switch ((_object)->_type) { \ _dispatch \ \ case esxVI_Type_##__type: \ @@ -543,7 +543,7 @@ default: \ ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, \ _("Call to %s for unexpected type '%s'"), __FUNCTION__, \ - esxVI_Type_ToString(item->_type)); \ + esxVI_Type_ToString((_object)->_type)); \ return _error_return; \ } @@ -585,7 +585,7 @@ #define ESX_VI__TEMPLATE__DYNAMIC_FREE(__type, _dispatch, _body) \ ESX_VI__TEMPLATE__FREE(__type, \ - ESX_VI__TEMPLATE__DISPATCH(__type, _dispatch, /* nothing */) \ + ESX_VI__TEMPLATE__DISPATCH(item, __type, _dispatch, /* nothing */) \ _body) @@ -618,14 +618,14 @@ #define ESX_VI__TEMPLATE__DYNAMIC_CAST_FROM_ANY_TYPE(__type, _dispatch) \ ESX_VI__TEMPLATE__CAST_FROM_ANY_TYPE_EXTRA(__type, esxVI_##__type, \ - ESX_VI__TEMPLATE__DISPATCH(__type, _dispatch, -1), \ + ESX_VI__TEMPLATE__DISPATCH(anyType, __type, _dispatch, -1), \ /* nothing */) #define ESX_VI__TEMPLATE__DYNAMIC_SERIALIZE(__type, _dispatch, _serialize) \ ESX_VI__TEMPLATE__SERIALIZE_EXTRA(__type, \ - ESX_VI__TEMPLATE__DISPATCH(__type, _dispatch, -1), \ + ESX_VI__TEMPLATE__DISPATCH(item, __type, _dispatch, -1), \ _serialize) -- 1.7.0.4

2 5

[libvirt] [PATCH] Move call to virReportOOMError into virFileBuildPath
by Matthias Bolte 27 Apr '11

27 Apr '11

Suggested by Daniel P. Berrange --- src/conf/nwfilter_conf.c | 5 +---- src/conf/storage_conf.c | 7 +------ src/util/util.c | 2 ++ src/xen/xen_inotify.c | 1 - src/xen/xm_internal.c | 5 +---- 5 files changed, 5 insertions(+), 15 deletions(-) diff --git a/src/conf/nwfilter_conf.c b/src/conf/nwfilter_conf.c index 327fab3..09dc32b 100644 --- a/src/conf/nwfilter_conf.c +++ b/src/conf/nwfilter_conf.c @@ -2588,10 +2588,8 @@ virNWFilterLoadAllConfigs(virConnectPtr conn, if (!virFileHasSuffix(entry->d_name, ".xml")) continue; - if (!(path = virFileBuildPath(configDir, entry->d_name, NULL))) { - virReportOOMError(); + if (!(path = virFileBuildPath(configDir, entry->d_name, NULL))) continue; - } nwfilter = virNWFilterObjLoad(conn, nwfilters, entry->d_name, path); if (nwfilter) @@ -2627,7 +2625,6 @@ virNWFilterObjSaveDef(virNWFilterDriverStatePtr driver, if (!(nwfilter->configFile = virFileBuildPath(driver->configDir, def->name, ".xml"))) { - virReportOOMError(); return -1; } } diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c index 5a069f5..116898d 100644 --- a/src/conf/storage_conf.c +++ b/src/conf/storage_conf.c @@ -1483,14 +1483,11 @@ virStoragePoolLoadAllConfigs(virStoragePoolObjListPtr pools, if (!virFileHasSuffix(entry->d_name, ".xml")) continue; - if (!(path = virFileBuildPath(configDir, entry->d_name, NULL))) { - virReportOOMError(); + if (!(path = virFileBuildPath(configDir, entry->d_name, NULL))) continue; - } if (!(autostartLink = virFileBuildPath(autostartDir, entry->d_name, NULL))) { - virReportOOMError(); VIR_FREE(path); continue; } @@ -1529,13 +1526,11 @@ virStoragePoolObjSaveDef(virStorageDriverStatePtr driver, if (!(pool->configFile = virFileBuildPath(driver->configDir, def->name, ".xml"))) { - virReportOOMError(); return -1; } if (!(pool->autostartLink = virFileBuildPath(driver->autostartDir, def->name, ".xml"))) { - virReportOOMError(); VIR_FREE(pool->configFile); return -1; } diff --git a/src/util/util.c b/src/util/util.c index d4d2610..3948b01 100644 --- a/src/util/util.c +++ b/src/util/util.c @@ -1851,10 +1851,12 @@ virFileBuildPath(const char *dir, const char *name, const char *ext) if (ext == NULL) { if (virAsprintf(&path, "%s/%s", dir, name) < 0) { + virReportOOMError(); return NULL; } } else { if (virAsprintf(&path, "%s/%s%s", dir, name, ext) < 0) { + virReportOOMError(); return NULL; } } diff --git a/src/xen/xen_inotify.c b/src/xen/xen_inotify.c index d809c45..9dde72c 100644 --- a/src/xen/xen_inotify.c +++ b/src/xen/xen_inotify.c @@ -415,7 +415,6 @@ xenInotifyOpen(virConnectPtr conn, /* Build the full file path */ if (!(path = virFileBuildPath(priv->configDir, ent->d_name, NULL))) { - virReportOOMError(); closedir(dh); return -1; } diff --git a/src/xen/xm_internal.c b/src/xen/xm_internal.c index db47a02..f9f52b5 100644 --- a/src/xen/xm_internal.c +++ b/src/xen/xm_internal.c @@ -388,7 +388,6 @@ int xenXMConfigCacheRefresh (virConnectPtr conn) { /* Build the full file path */ if (!(path = virFileBuildPath(priv->configDir, ent->d_name, NULL))) { - virReportOOMError(); closedir(dh); return -1; } @@ -1134,10 +1133,8 @@ virDomainPtr xenXMDomainDefineXML(virConnectPtr conn, const char *xml) entry = NULL; } - if (!(filename = virFileBuildPath(priv->configDir, def->name, NULL))) { - virReportOOMError(); + if (!(filename = virFileBuildPath(priv->configDir, def->name, NULL))) goto error; - } if (xenXMConfigSaveFile(conn, filename, def) < 0) goto error; -- 1.7.0.4

2 2

[libvirt] Entering devel freeze tomorrow
by Daniel Veillard 27 Apr '11

27 Apr '11

Well I initially suggested to enter freeze the last week-end but I had a serious backlog and let a few day pass. What I suggest is enter freeze tomorrow morning (my time, i.e. very early) at which point I will make a first candidate release tarball for testing. Then the target for the actually release might be Wed 4 or Thu 5 depending on how things turns out. If there is patches for new features that people want in but didn't get the ACK, please raise them again quickly today so we can try to review them and push in time for 0.9.1, otherwise, that will be 0.9.2 in a month, thanks ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

1 0

[libvirt] [PATCH] free buf->content when vsnprintf() failed
by Wen Congyang 27 Apr '11

27 Apr '11

When buf->error is 1, we do not return buf->content in the function virBufferContentAndReset(). So we should free buf->content when vsnprintf() failed. --- src/util/buf.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/src/util/buf.c b/src/util/buf.c index 7557ad1..fdb7660 100644 --- a/src/util/buf.c +++ b/src/util/buf.c @@ -241,6 +241,9 @@ virBufferVSprintf(const virBufferPtr buf, const char *format, ...) size = buf->size - buf->use; if ((count = vsnprintf(&buf->content[buf->use], size, format, argptr)) < 0) { + VIR_FREE(buf->content); + buf->size = 0; + buf->use = 0; buf->error = 1; goto err; } @@ -259,6 +262,9 @@ virBufferVSprintf(const virBufferPtr buf, const char *format, ...) size = buf->size - buf->use; if ((count = vsnprintf(&buf->content[buf->use], size, format, argptr)) < 0) { + VIR_FREE(buf->content); + buf->size = 0; + buf->use = 0; buf->error = 1; goto err; } -- 1.7.1

2 2

[libvirt] [PATCHv2 0/6] Add virNodeGetCpuTime() API
by Minoru Usui 27 Apr '11

27 Apr '11

Hi, This is v2 of virNodeGetCpuTime() API. It returns cpu utilization or cumulative cpu time of the node from /proc/stat since node boots up. This patch only supports linux host. Changes v1->v2 - Change user I/F like virDomainGetMemoryStats() - It can return either cpu utilization or cumulative cpu time of the node depends on each driver. Minoru Usui (6): [v2 1/6] virNodeGetCPUTime: Expose new API [v2 2/6] virNodeGetCPUTime: Define internal driver API [v2 3/6] virNodeGetCPUTime: Implement public API [v2 4/6] virNodeGetCPUTime: Implement remote protocol [v2 5/6] virNodeGetCPUTime: Implement virsh support [v2 6/6] virNodeGetCPUTime: Implement linux support daemon/remote.c | 48 +++++++++++++++++ daemon/remote_dispatch_args.h | 1 + daemon/remote_dispatch_prototypes.h | 8 +++ daemon/remote_dispatch_ret.h | 1 + daemon/remote_dispatch_table.h | 5 ++ include/libvirt/libvirt.h.in | 64 +++++++++++++++++++++++ src/driver.h | 8 +++ src/esx/esx_driver.c | 1 + src/libvirt.c | 70 +++++++++++++++++++++++++ src/libvirt_private.syms | 1 + src/libvirt_public.syms | 5 ++ src/libxl/libxl_driver.c | 1 + src/lxc/lxc_driver.c | 1 + src/nodeinfo.c | 78 ++++++++++++++++++++++++++++ src/nodeinfo.h | 5 ++- src/openvz/openvz_driver.c | 1 + src/phyp/phyp_driver.c | 1 + src/qemu/qemu_driver.c | 1 + src/remote/remote_driver.c | 38 ++++++++++++++ src/remote/remote_protocol.c | 33 ++++++++++++ src/remote/remote_protocol.h | 28 ++++++++++ src/remote/remote_protocol.x | 20 +++++++- src/remote_protocol-structs | 14 +++++ src/test/test_driver.c | 1 + src/uml/uml_driver.c | 1 + src/vbox/vbox_tmpl.c | 1 + src/vmware/vmware_driver.c | 1 + src/xen/xen_driver.c | 1 + src/xenapi/xenapi_driver.c | 1 + tools/virsh.c | 96 +++++++++++++++++++++++++++++++++++ tools/virsh.pod | 4 ++ 31 files changed, 537 insertions(+), 2 deletions(-) -- Minoru Usui <usui(a)mxm.nes.nec.co.jp>

3 18

[libvirt] [PATCH] daemon: Don't try to free an unsigned int in error paths
by Matthias Bolte 26 Apr '11

26 Apr '11

--- daemon/remote.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index 54fef64..1c98bba 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -3681,7 +3681,7 @@ remoteDispatchListNetworks(struct qemud_server *server ATTRIBUTE_UNUSED, cleanup: if (rv < 0) { remoteDispatchError(rerr); - VIR_FREE(ret->names.names_len); + VIR_FREE(ret->names.names_val); } return rv; } @@ -4200,7 +4200,7 @@ remoteDispatchListInterfaces(struct qemud_server *server ATTRIBUTE_UNUSED, cleanup: if (rv < 0) { remoteDispatchError(rerr); - VIR_FREE(ret->names.names_len); + VIR_FREE(ret->names.names_val); } return rv; } @@ -4275,7 +4275,7 @@ remoteDispatchListDefinedInterfaces(struct qemud_server *server ATTRIBUTE_UNUSED cleanup: if (rv < 0) { remoteDispatchError(rerr); - VIR_FREE(ret->names.names_len); + VIR_FREE(ret->names.names_val); } return rv; } @@ -8544,7 +8544,7 @@ remoteDispatchListNwfilters(struct qemud_server *server ATTRIBUTE_UNUSED, cleanup: if (rv < 0) { remoteDispatchError(rerr); - VIR_FREE(ret->names.names_len); + VIR_FREE(ret->names.names_val); } return rv; } -- 1.7.0.4

3 13

[libvirt] [PATCH] build: use gnulib passfd for simpler SCM_RIGHTS code
by Eric Blake 26 Apr '11

26 Apr '11

* bootstrap.conf (gnulib_modules): Add passfd. * src/util/util.c (virFileOpenAs): Simplify. --- It's always nice to shove the maintenance burden onto gnulib. bootstrap.conf | 1 + src/util/util.c | 38 ++++++++------------------------------ 2 files changed, 9 insertions(+), 30 deletions(-) diff --git a/bootstrap.conf b/bootstrap.conf index 293f86e..3b3a90f 100644 --- a/bootstrap.conf +++ b/bootstrap.conf @@ -52,6 +52,7 @@ mkstemps mktempd netdb nonblocking +passfd perror physmem pipe-posix diff --git a/src/util/util.c b/src/util/util.c index d4d2610..de4e3b3 100644 --- a/src/util/util.c +++ b/src/util/util.c @@ -78,6 +78,7 @@ #include "files.h" #include "command.h" #include "nonblocking.h" +#include "passfd.h" #ifndef NSIG # define NSIG 32 @@ -1480,11 +1481,6 @@ virFileOpenAs(const char *path, int openflags, mode_t mode, int waitret, status, ret = 0; int fd = -1; int pair[2] = { -1, -1 }; - struct msghdr msg; - struct cmsghdr *cmsg; - char buf[CMSG_SPACE(sizeof(fd))]; - char dummy = 0; - struct iovec iov; int forkRet; if ((!(flags & VIR_FILE_OPEN_AS_UID)) @@ -1506,18 +1502,6 @@ virFileOpenAs(const char *path, int openflags, mode_t mode, return ret; } - memset(&msg, 0, sizeof(msg)); - iov.iov_base = &dummy; - iov.iov_len = 1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = buf; - msg.msg_controllen = sizeof(buf); - cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - cmsg->cmsg_len = CMSG_LEN(sizeof(fd)); - forkRet = virFork(&pid); if (pid < 0) { @@ -1529,26 +1513,20 @@ virFileOpenAs(const char *path, int openflags, mode_t mode, VIR_FORCE_CLOSE(pair[1]); do { - ret = recvmsg(pair[0], &msg, 0); + ret = recvfd(pair[0], 0); } while (ret < 0 && errno == EINTR); - if (ret < 0) { + if (ret < 0 && errno != EACCES) { ret = -errno; VIR_FORCE_CLOSE(pair[0]); while ((waitret = waitpid(pid, NULL, 0) == -1) && (errno == EINTR)); goto parenterror; + } else { + fd = ret; } VIR_FORCE_CLOSE(pair[0]); - /* See if fd was transferred. */ - cmsg = CMSG_FIRSTHDR(&msg); - if (cmsg && cmsg->cmsg_len == CMSG_LEN(sizeof(fd)) && - cmsg->cmsg_level == SOL_SOCKET && - cmsg->cmsg_type == SCM_RIGHTS) { - memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd)); - } - /* wait for child to complete, and retrieve its exit code */ while ((waitret = waitpid(pid, &status, 0) == -1) && (errno == EINTR)); @@ -1557,12 +1535,14 @@ virFileOpenAs(const char *path, int openflags, mode_t mode, virReportSystemError(errno, _("failed to wait for child creating '%s'"), path); + VIR_FORCE_CLOSE(fd); goto parenterror; } if (!WIFEXITED(status) || (ret = -WEXITSTATUS(status)) == -EACCES || fd == -1) { /* fall back to the simpler method, which works better in * some cases */ + VIR_FORCE_CLOSE(fd); return virFileOpenAsNoFork(path, openflags, mode, uid, gid, flags); } if (!ret) @@ -1627,10 +1607,9 @@ parenterror: path, mode); goto childerror; } - memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd)); do { - ret = sendmsg(pair[1], &msg, 0); + ret = sendfd(pair[1], fd); } while (ret < 0 && errno == EINTR); if (ret < 0) { @@ -1638,7 +1617,6 @@ parenterror: goto childerror; } - ret = 0; childerror: /* ret tracks -errno on failure, but exit value must be positive. * If the child exits with EACCES, then the parent tries again. */ -- 1.7.1

2 6