Re: [libvirt] [PATCH v7 11/11] qemu: Add TLS support for Veritas HyperScale (VxHS)

From: Ashish Mittal <Ashish.Mittal(a)veritas.com&gt; Alter qemu command line generation in order to possibly add TLS for a suitably configured domain. Sample TLS args generated by libvirt - -object tls-creds-x509,id=objvirtio-disk0_tls0,dir=/etc/pki/qemu,\ endpoint=client,verify-peer=yes \ -drive file.driver=vxhs,file.tls-creds=objvirtio-disk0_tls0,\ file.vdisk-id=eb90327c-8302-4725-9e1b-4e85ed4dc251,\ file.server.0.type=tcp,file.server.0.host=192.168.0.1,\ file.server.0.port=9999,format=raw,if=none,\ id=drive-virtio-disk0,cache=none \ -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,\ id=virtio-disk0 Update the qemuxml2argvtest with a couple of examples. One for a simple case and the other a bit more complex where multiple VxHS disks are added where at least one uses a VxHS that doesn't require TLS credentials and thus sets the domain disk source attribute "tls = 'no'". Update the hotplug to be able to handle processing the tlsAlias whether it's to add the TLS object when hotplugging a disk or to remove the TLS object when hot unplugging a disk. The hot plug/unplug code is largely generic, but the addition code does make the VXHS specific checks only because it needs to grab the correct config directory and generate the object as the command line would do. Signed-off-by: Ashish Mittal <Ashish.Mittal(a)veritas.com&gt; Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- src/qemu/qemu_block.c | 8 +++ src/qemu/qemu_command.c | 29 +++++++++ src/qemu/qemu_hotplug.c | 73 ++++++++++++++++++++++ ...-disk-drive-network-tlsx509-multidisk-vxhs.args | 43 +++++++++++++ ...v-disk-drive-network-tlsx509-multidisk-vxhs.xml | 50 +++++++++++++++ ...muxml2argv-disk-drive-network-tlsx509-vxhs.args | 30 +++++++++ tests/qemuxml2argvtest.c | 7 +++ 7 files changed, 240 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-vxhs.args diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c index f5269fb..be4e8fa 100644 --- a/src/qemu/qemu_block.c +++ b/src/qemu/qemu_block.c @@ -495,16 +495,24 @@ qemuBlockStorageSourceGetVxHSProps(virStorageSourcePtr src) return NULL; } + if (src->haveTLS == VIR_TRISTATE_BOOL_YES && !src->tlsAlias) { + virReportError(VIR_ERR_INVALID_ARG, "%s", + _("VxHS disk does not have TLS alias set")); + return NULL; + } + if (!(server = qemuBlockStorageSourceBuildHostsJSONSocketAddress(src, true))) return NULL; /* VxHS disk specification example: * { driver:"vxhs", + * [tls-creds:"objvirtio-disk0_tls0",] * vdisk-id:"eb90327c-8302-4725-4e85ed4dc251", * server:[{type:"tcp", host:"1.2.3.4", port:9999}]} */ if (virJSONValueObjectCreate(&ret, "s:driver", protocol, + "S:tls-creds", src->tlsAlias, "s:vdisk-id", src->path, "a:server", server, NULL) < 0) virJSONValueFree(server); diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index b9e2ab3..d6b04a3 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -791,6 +791,32 @@ qemuBuildTLSx509CommandLine(virCommandPtr cmd, } +/* qemuBuildDiskTLSx509CommandLine: + * + * Add TLS object if the disk uses a secure communication channel + * + * Returns 0 on success, -1 w/ error on some sort of failure. + */ +static int +qemuBuildDiskTLSx509CommandLine(virCommandPtr cmd, + virQEMUDriverConfigPtr cfg, + virDomainDiskDefPtr disk, + virQEMUCapsPtr qemuCaps) +{ + virStorageSourcePtr src = disk->src; + + /* other protocols may be added later */ + if (src->protocol == VIR_STORAGE_NET_PROTOCOL_VXHS && + disk->src->haveTLS == VIR_TRISTATE_BOOL_YES) { + return qemuBuildTLSx509CommandLine(cmd, cfg->vxhsTLSx509certdir, + false, true, false, + disk->info.alias, qemuCaps); + } + + return 0; +} + + static char * qemuBuildNetworkDriveURI(virStorageSourcePtr src, qemuDomainSecretInfoPtr secinfo) @@ -2218,6 +2244,9 @@ qemuBuildDiskDriveCommandLine(virCommandPtr cmd, if (qemuBuildDiskSecinfoCommandLine(cmd, encinfo) < 0) return -1; + if (qemuBuildDiskTLSx509CommandLine(cmd, cfg, disk, qemuCaps) < 0) + return -1; + virCommandAddArg(cmd, "-drive"); if (!(optstr = qemuBuildDriveStr(disk, cfg, driveBoot, qemuCaps))) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 9611df5..4c1074d 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -152,6 +152,55 @@ qemuDomainPrepareDisk(virQEMUDriverPtr driver, static int +qemuDomainAddDiskTLSObject(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virDomainDiskDefPtr disk, + char **tlsAlias) +{ + int ret = -1; + virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); + qemuDomainObjPrivatePtr priv = vm->privateData; + virStorageSourcePtr src = disk->src; + virJSONValuePtr tlsProps = NULL; + + /* NB: This may alter haveTLS based on cfg */ + qemuDomainPrepareDiskSourceTLS(src, disk->info.alias, cfg); + + if (src->haveTLS != VIR_TRISTATE_BOOL_YES) { + ret = 0; + goto cleanup; + } + + /* Initial implementation doesn't require/use a secret to decrypt + * a server certificate, so there's no need to manage a tlsSecAlias + * and tlsSecProps. See qemuDomainAddChardevTLSObjects for the + * methodology required to add a secret object. */ + + /* For a VxHS environment, create a TLS object for the client to + * connect to the VxHS server. */ + if (src->type == VIR_STORAGE_TYPE_NETWORK && + src->protocol == VIR_STORAGE_NET_PROTOCOL_VXHS && + qemuDomainGetTLSObjects(priv->qemuCaps, NULL, + cfg->vxhsTLSx509certdir, false, true, + disk->info.alias, &tlsProps, tlsAlias, + NULL, NULL) < 0) + goto cleanup; + + if (qemuDomainAddTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE, + NULL, NULL, *tlsAlias, &tlsProps) < 0) + goto cleanup; + + ret = 0; + + cleanup: + virJSONValueFree(tlsProps); + virObjectUnref(cfg); + + return ret; +} + + +static int qemuHotplugWaitForTrayEject(virQEMUDriverPtr driver, virDomainObjPtr vm, virDomainDiskDefPtr disk, @@ -315,6 +364,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn, char *devstr = NULL; char *drivestr = NULL; char *drivealias = NULL; + char *tlsAlias = NULL; bool releaseaddr = false; bool driveAdded = false; bool secobjAdded = false; @@ -372,6 +422,9 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn, if (encinfo && qemuBuildSecretInfoProps(encinfo, &encobjProps) < 0) goto error; + if (qemuDomainAddDiskTLSObject(driver, vm, disk, &tlsAlias) < 0) + goto error; + if (!(drivestr = qemuBuildDriveStr(disk, cfg, false, priv->qemuCaps))) goto error; @@ -422,6 +475,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn, ret = 0; cleanup: + VIR_FREE(tlsAlias); virJSONValueFree(secobjProps); virJSONValueFree(encobjProps); qemuDomainSecretDiskDestroy(disk); @@ -453,6 +507,8 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn, virDomainAuditDisk(vm, NULL, disk->src, "attach", false); error: + qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE, NULL, tlsAlias); + if (releaseaddr) qemuDomainReleaseDeviceAddress(vm, &disk->info, src); @@ -611,6 +667,7 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn, virErrorPtr orig_err; char *drivestr = NULL; char *devstr = NULL; + char *tlsAlias = NULL; bool driveAdded = false; bool encobjAdded = false; bool secobjAdded = false; @@ -667,6 +724,9 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn, if (!(devstr = qemuBuildDriveDevStr(vm->def, disk, 0, priv->qemuCaps))) goto error; + if (qemuDomainAddDiskTLSObject(driver, vm, disk, &tlsAlias) < 0) + goto error; + if (!(drivestr = qemuBuildDriveStr(disk, cfg, false, priv->qemuCaps))) goto error; @@ -712,6 +772,7 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn, ret = 0; cleanup: + VIR_FREE(tlsAlias); virJSONValueFree(secobjProps); virJSONValueFree(encobjProps); qemuDomainSecretDiskDestroy(disk); @@ -740,6 +801,8 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn, virDomainAuditDisk(vm, NULL, disk->src, "attach", false); error: + qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE, NULL, tlsAlias); + ignore_value(qemuDomainPrepareDisk(driver, vm, disk, NULL, true)); goto cleanup; } @@ -756,6 +819,7 @@ qemuDomainAttachUSBMassStorageDevice(virQEMUDriverPtr driver, char *drivealias = NULL; char *drivestr = NULL; char *devstr = NULL; + char *tlsAlias = NULL; bool driveAdded = false; virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); const char *src = virDomainDiskGetSource(disk); @@ -780,6 +844,9 @@ qemuDomainAttachUSBMassStorageDevice(virQEMUDriverPtr driver, if (qemuAssignDeviceDiskAlias(vm->def, disk, priv->qemuCaps) < 0) goto error; + if (qemuDomainAddDiskTLSObject(driver, vm, disk, &tlsAlias) < 0) + goto error; + if (!(drivestr = qemuBuildDriveStr(disk, cfg, false, priv->qemuCaps))) goto error; @@ -810,6 +877,7 @@ qemuDomainAttachUSBMassStorageDevice(virQEMUDriverPtr driver, ret = 0; cleanup: + VIR_FREE(tlsAlias); if (ret < 0 && releaseaddr) virDomainUSBAddressRelease(priv->usbaddrs, &disk->info); VIR_FREE(devstr); @@ -833,6 +901,8 @@ qemuDomainAttachUSBMassStorageDevice(virQEMUDriverPtr driver, virDomainAuditDisk(vm, NULL, disk->src, "attach", false); error: + qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE, NULL, tlsAlias); + ignore_value(qemuDomainPrepareDisk(driver, vm, disk, NULL, true)); goto cleanup; } @@ -3710,6 +3780,9 @@ qemuDomainRemoveDiskDevice(virQEMUDriverPtr driver, ignore_value(qemuMonitorDelObject(priv->mon, encAlias)); VIR_FREE(encAlias); + if (disk->src->tlsAlias) + ignore_value(qemuMonitorDelObject(priv->mon, disk->src->tlsAlias)); + if (qemuDomainObjExitMonitor(driver, vm) < 0) return -1; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.args b/tests/qemuxml2argvdata/ qemuxml2argv-disk-drive-network-tlsx509-multidisk-vxhs.args new file mode 100644 index 0000000..dceae52 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.args @@ -0,0 +1,43 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/home/test \ +USER=test \ +LOGNAME=test \ +QEMU_AUDIO_DRV=none \ +/usr/bin/qemu-system-x86_64 \ +-name QEMUGuest1 \ +-S \ +-M pc \ +-cpu qemu32 \ +-m 214 \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-nographic \ +-nodefaults \ +-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/ monitor.sock,\ +server,nowait \ +-mon chardev=charmonitor,id=monitor,mode=readline \ +-no-acpi \ +-boot c \ +-usb \ +-object tls-creds-x509,id=objvirtio-disk0_tls0,dir=/etc/pki/qemu,\ +endpoint=client,verify-peer=yes \ +-drive file.driver=vxhs,file.tls-creds=objvirtio-disk0_tls0,\ +file.vdisk-id=eb90327c-8302-4725-9e1b-4e85ed4dc251,file. server.0.type=tcp,\ +file.server.0.host=192.168.0.1,file.server.0.port=9999, format=raw,if=none,\ +id=drive-virtio-disk0,cache=none \ +-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,\ +id=virtio-disk0 \ +-object tls-creds-x509,id=objvirtio-disk1_tls0,dir=/etc/pki/qemu,\ +endpoint=client,verify-peer=yes \ +-drive file.driver=vxhs,file.tls-creds=objvirtio-disk1_tls0,\ +file.vdisk-id=eb90327c-8302-4725-9e1b-4e85ed4dc252,file. server.0.type=tcp,\ +file.server.0.host=192.168.0.2,file.server.0.port=9999, format=raw,if=none,\ +id=drive-virtio-disk1,cache=none \ +-device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,\ +id=virtio-disk1 \ +-drive file.driver=vxhs,file.vdisk-id=eb90327c-8302-4725-9e1b- 4e85ed4dc253,\ +file.server.0.type=tcp,file.server.0.host=192.168.0.3, file.server.0.port=9999,\ +format=raw,if=none,id=drive-virtio-disk2,cache=none \ +-device virtio-blk-pci,bus=pci.0,addr=0x6,drive=drive-virtio-disk2,\ +id=virtio-disk2 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.xml b/tests/qemuxml2argvdata/ qemuxml2argv-disk-drive-network-tlsx509-multidisk-vxhs.xml new file mode 100644 index 0000000..a66e81f --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-multidisk-vxhs.xml @@ -0,0 +1,50 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu-system-x86_64</emulator> + <disk type='network' device='disk'> + <driver name='qemu' type='raw' cache='none'/> + <source protocol='vxhs' name='eb90327c-8302-4725-9e1b- 4e85ed4dc251'> + <host name='192.168.0.1' port='9999'/> + </source> + <target dev='vda' bus='virtio'/> + <serial>eb90327c-8302-4725-9e1b-4e85ed4dc251</serial> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> + </disk> + <disk type='network' device='disk'> + <driver name='qemu' type='raw' cache='none'/> + <source protocol='vxhs' name='eb90327c-8302-4725-9e1b- 4e85ed4dc252'> + <host name='192.168.0.2' port='9999'/> + </source> + <target dev='vdb' bus='virtio'/> + <serial>eb90327c-8302-4725-9e1b-4e85ed4dc252</serial> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </disk> + <disk type='network' device='disk'> + <driver name='qemu' type='raw' cache='none'/> + <source protocol='vxhs' name='eb90327c-8302-4725-9e1b-4e85ed4dc253' tls='no'> + <host name='192.168.0.3' port='9999'/> + </source> + <target dev='vdc' bus='virtio'/> + <serial>eb90327c-8302-4725-9e1b-4e85ed4dc252</serial> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-tlsx509-vxhs.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-tlsx509-vxhs.args new file mode 100644 index 0000000..5308a16 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive- network-tlsx509-vxhs.args @@ -0,0 +1,30 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/home/test \ +USER=test \ +LOGNAME=test \ +QEMU_AUDIO_DRV=none \ +/usr/bin/qemu-system-x86_64 \ +-name QEMUGuest1 \ +-S \ +-M pc \ +-cpu qemu32 \ +-m 214 \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-nographic \ +-nodefaults \ +-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/ monitor.sock,\ +server,nowait \ +-mon chardev=charmonitor,id=monitor,mode=readline \ +-no-acpi \ +-boot c \ +-usb \ +-object tls-creds-x509,id=objvirtio-disk0_tls0,dir=/etc/pki/qemu,\ +endpoint=client,verify-peer=yes \ +-drive file.driver=vxhs,file.tls-creds=objvirtio-disk0_tls0,\ +file.vdisk-id=eb90327c-8302-4725-9e1b-4e85ed4dc251,file. server.0.type=tcp,\ +file.server.0.host=192.168.0.1,file.server.0.port=9999, format=raw,if=none,\ +id=drive-virtio-disk0,cache=none \ +-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,\ +id=virtio-disk0 diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index b92ded8..0366dc3 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -932,6 +932,13 @@ mymain(void) DO_TEST("disk-drive-network-rbd-ipv6", NONE); DO_TEST_FAILURE("disk-drive-network-rbd-no-colon", NONE); DO_TEST("disk-drive-network-vxhs", QEMU_CAPS_VXHS); + driver.config->vxhsTLS = 1; + DO_TEST("disk-drive-network-tlsx509-vxhs", QEMU_CAPS_VXHS, + QEMU_CAPS_OBJECT_TLS_CREDS_X509); + DO_TEST("disk-drive-network-tlsx509-multidisk-vxhs", QEMU_CAPS_VXHS, + QEMU_CAPS_OBJECT_TLS_CREDS_X509); + driver.config->vxhsTLS = 0; + VIR_FREE(driver.config->vxhsTLSx509certdir); DO_TEST("disk-drive-no-boot", QEMU_CAPS_BOOTINDEX); DO_TEST_PARSE_ERROR("disk-device-lun-type-invalid", -- 2.9.5