[PATCH v2 7/7] qemu: add luks-any encryption support for RBD images

The newly added luks-any rbd encryption format in qemu allows for opening both LUKS and LUKS2 encryption formats. This commit enables libvirt uses to use this wildcard format. Signed-off-by: Or Ozeri <oro(a)il.ibm.com&gt; --- docs/formatstorageencryption.rst | 9 ++++ src/conf/schemas/storagecommon.rng | 1 + src/conf/storage_encryption_conf.c | 2 +- src/conf/storage_encryption_conf.h | 1 + src/libvirt_private.syms | 1 + src/qemu/qemu_block.c | 10 +++-- src/qemu/qemu_domain.c | 29 +++++++++++- ...k-rbd-encryption-luks-any.x86_64-7.2.0.err | 1 + ...rbd-encryption-luks-any.x86_64-latest.args | 37 ++++++++++++++++ .../disk-network-rbd-encryption-luks-any.xml | 39 ++++++++++++++++ tests/qemuxml2argvtest.c | 2 + ...-rbd-encryption-luks-any.x86_64-latest.xml | 44 +++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 13 files changed, 170 insertions(+), 7 deletions(-) create mode 100644 tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-7.2.0.err create mode 100644 tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.xml create mode 100644 tests/qemuxml2xmloutdata/disk-network-rbd-encryption-luks-any.x86_64-latest.xml diff --git a/docs/formatstorageencryption.rst b/docs/formatstorageencryption.rst index 3b3e9ea379..071ea8f4d1 100644 --- a/docs/formatstorageencryption.rst +++ b/docs/formatstorageencryption.rst @@ -109,6 +109,15 @@ to a qemu VM using the qemu VM driver. A single ``<secret type='passphrase'...>`` element is expected (except for the case of RBD layered encryption mentioned above). +``luks-any`` format +~~~~~~~~~~~~~~~~~~~ + +The ``luks-any`` format is currently supported only by the ``librbd`` engine, +and can only be applied to RBD network disks (RBD images). This format will try +to parse the disk as either LUKS or LUKS2, depending on the actual on-disk +format. A single ``<secret type='passphrase'...>`` element is expected (except +for the case of RBD layered encryption mentioned above) :since:`Since 9.3.0` . + Examples -------- diff --git a/src/conf/schemas/storagecommon.rng b/src/conf/schemas/storagecommon.rng index 225456f03c..14704c737e 100644 --- a/src/conf/schemas/storagecommon.rng +++ b/src/conf/schemas/storagecommon.rng @@ -14,6 +14,7 @@ <value>qcow</value> <value>luks</value> <value>luks2</value> + <value>luks-any</value> </choice> </attribute> <optional> diff --git a/src/conf/storage_encryption_conf.c b/src/conf/storage_encryption_conf.c index 3651ff8cfd..639cbf2e58 100644 --- a/src/conf/storage_encryption_conf.c +++ b/src/conf/storage_encryption_conf.c @@ -41,7 +41,7 @@ VIR_ENUM_IMPL(virStorageEncryptionSecret, VIR_ENUM_IMPL(virStorageEncryptionFormat, VIR_STORAGE_ENCRYPTION_FORMAT_LAST, - "default", "qcow", "luks", "luks2", + "default", "qcow", "luks", "luks2", "luks-any", ); VIR_ENUM_IMPL(virStorageEncryptionEngine, diff --git a/src/conf/storage_encryption_conf.h b/src/conf/storage_encryption_conf.h index 312599ad44..03f0e60feb 100644 --- a/src/conf/storage_encryption_conf.h +++ b/src/conf/storage_encryption_conf.h @@ -66,6 +66,7 @@ typedef enum { VIR_STORAGE_ENCRYPTION_FORMAT_QCOW, /* Both qcow and qcow2 */ VIR_STORAGE_ENCRYPTION_FORMAT_LUKS, VIR_STORAGE_ENCRYPTION_FORMAT_LUKS2, + VIR_STORAGE_ENCRYPTION_FORMAT_LUKS_ANY, VIR_STORAGE_ENCRYPTION_FORMAT_LAST, } virStorageEncryptionFormatType; diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 6f44788233..3187112ca3 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1095,6 +1095,7 @@ virStorageVolTypeToString; # conf/storage_encryption_conf.h virStorageEncryptionFormat; +virStorageEncryptionFormatTypeToString; virStorageEncryptionFree; virStorageEncryptionParseNode; diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c index d50cfa20c5..3fafc31084 100644 --- a/src/qemu/qemu_block.c +++ b/src/qemu/qemu_block.c @@ -575,6 +575,10 @@ qemuBlockStorageSourceGetRBDProps(virStorageSource *src, encformat = "luks2"; break; + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS_ANY: + encformat = "luks-any"; + break; + case VIR_STORAGE_ENCRYPTION_FORMAT_QCOW: case VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT: case VIR_STORAGE_ENCRYPTION_FORMAT_LAST: @@ -1052,10 +1056,8 @@ qemuBlockStorageSourceGetCryptoProps(virStorageSource *src, break; case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS2: - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("luks2 is currently not supported by the qemu encryption engine")); - return -1; - + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS_ANY: + /* validation code asserts the above cases are impossible */ case VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT: case VIR_STORAGE_ENCRYPTION_FORMAT_LAST: default: diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 726d0ab0a1..a832e75c3c 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -5186,8 +5186,10 @@ qemuDomainValidateStorageSource(virStorageSource *src, break; case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS2: - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("luks2 is currently not supported by the qemu encryption engine")); + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS_ANY: + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("'%s' is currently not supported by the qemu encryption engine"), + virStorageEncryptionFormatTypeToString(src->encryption->format)); return -1; case VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT: @@ -5227,6 +5229,29 @@ qemuDomainValidateStorageSource(virStorageSource *src, return -1; } } + + switch ((virStorageEncryptionFormatType) src->encryption->format) { + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS: + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS2: + break; + + case VIR_STORAGE_ENCRYPTION_FORMAT_LUKS_ANY: + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_RBD_ENCRYPTION_LUKS_ANY)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("luks-any encryption is not supported by this QEMU binary")); + return -1; + } + break; + + case VIR_STORAGE_ENCRYPTION_FORMAT_QCOW: + /* validation code above already asserts this case is impossible */ + case VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT: + case VIR_STORAGE_ENCRYPTION_FORMAT_LAST: + default: + virReportEnumRangeError(virStorageEncryptionFormatType, + src->encryption->format); + return -1; + } break; case VIR_STORAGE_ENCRYPTION_ENGINE_DEFAULT: diff --git a/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-7.2.0.err b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-7.2.0.err new file mode 100644 index 0000000000..66b2a65ac1 --- /dev/null +++ b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-7.2.0.err @@ -0,0 +1 @@ +unsupported configuration: luks-any encryption is not supported by this QEMU binary diff --git a/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-latest.args new file mode 100644 index 0000000000..5dedfc5f6b --- /dev/null +++ b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.x86_64-latest.args @@ -0,0 +1,37 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/var/lib/libvirt/qemu/domain--1-encryptdisk \ +USER=test \ +LOGNAME=test \ +XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-encryptdisk/.local/share \ +XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-encryptdisk/.cache \ +XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-encryptdisk/.config \ +/usr/bin/qemu-system-x86_64 \ +-name guest=encryptdisk,debug-threads=on \ +-S \ +-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-encryptdisk/master-key.aes"}' \ +-machine pc-i440fx-2.1,usb=off,dump-guest-core=off,memory-backend=pc.ram,acpi=off \ +-accel tcg \ +-cpu qemu64 \ +-m 1024 \ +-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":1073741824}' \ +-overcommit mem-lock=off \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid 496898a6-e6ff-f7c8-5dc2-3cf410945ee9 \ +-display none \ +-no-user-config \ +-nodefaults \ +-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \ +-mon chardev=charmonitor,id=monitor,mode=control \ +-rtc base=utc \ +-no-shutdown \ +-boot strict=on \ +-device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \ +-object '{"qom-type":"secret","id":"libvirt-1-format-encryption-secret0","data":"9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1","keyid":"masterKey0","iv":"AAECAwQFBgcICQoLDA0ODw==","format":"base64"}' \ +-blockdev '{"driver":"rbd","pool":"pool","image":"image","server":[{"host":"mon1.example.org","port":"6321"},{"host":"mon2.example.org","port":"6322"},{"host":"mon3.example.org","port":"6322"}],"encrypt":{"format":"luks-any","key-secret":"libvirt-1-format-encryption-secret0"},"node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"raw","file":"libvirt-1-storage"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x2","drive":"libvirt-1-format","id":"virtio-disk0","bootindex":1}' \ +-audiodev '{"id":"audio1","driver":"none"}' \ +-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x3"}' \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-msg timestamp=on diff --git a/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.xml b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.xml new file mode 100644 index 0000000000..37d9900e74 --- /dev/null +++ b/tests/qemuxml2argvdata/disk-network-rbd-encryption-luks-any.xml @@ -0,0 +1,39 @@ +<domain type='qemu'> + <name>encryptdisk</name> + <uuid>496898a6-e6ff-f7c8-5dc2-3cf410945ee9</uuid> + <memory unit='KiB'>1048576</memory> + <currentMemory unit='KiB'>524288</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc-i440fx-2.1'>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'/> + <source protocol='rbd' name='pool/image'> + <host name='mon1.example.org' port='6321'/> + <host name='mon2.example.org' port='6322'/> + <host name='mon3.example.org' port='6322'/> + <encryption format='luks-any' engine='librbd'> + <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80fb0'/> + </encryption> + </source> + <target dev='vda' bus='virtio'/> + </disk> + <controller type='usb' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </memballoon> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 94e88f7eab..7bc2a134a7 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1249,6 +1249,8 @@ mymain(void) DO_TEST_CAPS_LATEST("disk-network-rbd-encryption"); DO_TEST_CAPS_VER_PARSE_ERROR("disk-network-rbd-encryption-layering", "7.2.0"); DO_TEST_CAPS_LATEST("disk-network-rbd-encryption-layering"); + DO_TEST_CAPS_VER_PARSE_ERROR("disk-network-rbd-encryption-luks-any", "7.2.0"); + DO_TEST_CAPS_LATEST("disk-network-rbd-encryption-luks-any"); DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-encryption-wrong"); DO_TEST_CAPS_LATEST("disk-network-rbd-no-colon"); /* qemu-6.0 is the last qemu version supporting sheepdog */ diff --git a/tests/qemuxml2xmloutdata/disk-network-rbd-encryption-luks-any.x86_64-latest.xml b/tests/qemuxml2xmloutdata/disk-network-rbd-encryption-luks-any.x86_64-latest.xml new file mode 100644 index 0000000000..d9f4ad17d9 --- /dev/null +++ b/tests/qemuxml2xmloutdata/disk-network-rbd-encryption-luks-any.x86_64-latest.xml @@ -0,0 +1,44 @@ +<domain type='qemu'> + <name>encryptdisk</name> + <uuid>496898a6-e6ff-f7c8-5dc2-3cf410945ee9</uuid> + <memory unit='KiB'>1048576</memory> + <currentMemory unit='KiB'>524288</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc-i440fx-2.1'>hvm</type> + <boot dev='hd'/> + </os> + <cpu mode='custom' match='exact' check='none'> + <model fallback='forbid'>qemu64</model> + </cpu> + <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'/> + <source protocol='rbd' name='pool/image'> + <host name='mon1.example.org' port='6321'/> + <host name='mon2.example.org' port='6322'/> + <host name='mon3.example.org' port='6322'/> + <encryption format='luks-any' engine='librbd'> + <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80fb0'/> + </encryption> + </source> + <target dev='vda' bus='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </disk> + <controller type='usb' index='0' model='piix3-uhci'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <audio id='1' type='none'/> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </memballoon> + </devices> +</domain> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 1e62fbdd19..3d4c038c70 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -326,6 +326,7 @@ mymain(void) DO_TEST_NOCAPS("disk-network-rbd"); DO_TEST_CAPS_LATEST("disk-network-rbd-encryption"); DO_TEST_CAPS_LATEST("disk-network-rbd-encryption-layering"); + DO_TEST_CAPS_LATEST("disk-network-rbd-encryption-luks-any"); DO_TEST_NOCAPS("disk-network-source-auth"); DO_TEST_NOCAPS("disk-network-sheepdog"); DO_TEST_NOCAPS("disk-network-vxhs"); -- 2.25.1