[libvirt] [PATCH 2/2] qemu: Use secret objects to pass iSCSI passwords
John Ferlan
jferlan at redhat.com
Tue Sep 5 19:09:35 UTC 2017
https://bugzilla.redhat.com/show_bug.cgi?id=1425757
The blockdev-add code provides a mechanism to sanely provide user
and password-secret arguments for iscsi without placing them on the
command line to be viewable by a 'ps -ef' type command or needing
to create separate -iscsi devices for each disk/volume found.
So modify the iSCSI command line building to check for the presence
of the capability in order properly setup and use the domain master
secret object to encrypt the password in a secret object and alter
the parameters for the command line to utilize.
Modify the xml2argvtest to exhibit the syntax for both disk and
hostdev configurations.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/qemu/qemu_command.c | 19 ++++++++-
src/qemu/qemu_domain.c | 4 ++
...xml2argv-disk-drive-network-iscsi-auth-AES.args | 39 ++++++++++++++++++
...uxml2argv-disk-drive-network-iscsi-auth-AES.xml | 43 +++++++++++++++++++
...ml2argv-hostdev-scsi-virtio-iscsi-auth-AES.args | 35 ++++++++++++++++
...xml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml | 48 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 10 +++++
7 files changed, 196 insertions(+), 2 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index ed8cb6e..6012538 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -591,6 +591,7 @@ qemuBuildDiskSecinfoCommandLine(virCommandPtr cmd,
/* qemuBuildGeneralSecinfoURI:
+ * @protocol: Disk source protocol
* @uri: Pointer to the URI structure to add to
* @secinfo: Pointer to the secret info data (if present)
*
@@ -602,7 +603,8 @@ qemuBuildDiskSecinfoCommandLine(virCommandPtr cmd,
* -1 and error message if fail to add secret information
*/
static int
-qemuBuildGeneralSecinfoURI(virURIPtr uri,
+qemuBuildGeneralSecinfoURI(virStorageNetProtocol protocol,
+ virURIPtr uri,
qemuDomainSecretInfoPtr secinfo)
{
if (!secinfo)
@@ -628,6 +630,16 @@ qemuBuildGeneralSecinfoURI(virURIPtr uri,
break;
case VIR_DOMAIN_SECRET_INFO_TYPE_AES:
+ /* NB: Cannot fill in @user here because that gets formatted into the
+ * URI as "iscsi://{username}@{host}:{port}/{iqn}%3A{target}/{lun}",
+ * but the expectation is it'll be a file parameter "user={username},".
+ * Still we don't want to return -1, so deal with this later */
+ if (protocol == VIR_STORAGE_NET_PROTOCOL_ISCSI)
+ return 0;
+ else
+ return -1;
+ break;
+
case VIR_DOMAIN_SECRET_INFO_TYPE_LAST:
return -1;
}
@@ -841,7 +853,7 @@ qemuBuildNetworkDriveURI(virStorageSourcePtr src,
virAsprintf(&uri->query, "socket=%s", src->hosts->socket) < 0)
goto cleanup;
- if (qemuBuildGeneralSecinfoURI(uri, secinfo) < 0)
+ if (qemuBuildGeneralSecinfoURI(src->protocol, uri, secinfo) < 0)
goto cleanup;
if (VIR_STRDUP(uri->server, src->hosts->name) < 0)
@@ -1418,6 +1430,9 @@ qemuBuildDriveSourceStr(virDomainDiskDefPtr disk,
* filename=%s,...") instead of the legacy model (e.g."-drive
* file=%s,..."), then the "file." prefix can be removed
*/
+ if (disk->src->protocol == VIR_STORAGE_NET_PROTOCOL_ISCSI)
+ virBufferAsprintf(buf, "file.user=%s,", secinfo->s.aes.username);
+
virBufferAsprintf(buf, "file.password-secret=%s,",
secinfo->s.aes.alias);
}
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 9cff501..348b8e5 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1156,9 +1156,13 @@ qemuDomainSecretSetup(virConnectPtr conn,
virSecretLookupTypeDefPtr seclookupdef,
bool isLuks)
{
+ bool iscsiHasPS = virQEMUCapsGet(priv->qemuCaps,
+ QEMU_CAPS_ISCSI_PASSWORD_SECRET);
+
if (virCryptoHaveCipher(VIR_CRYPTO_CIPHER_AES256CBC) &&
virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_SECRET) &&
(usageType == VIR_SECRET_USAGE_TYPE_CEPH ||
+ (usageType == VIR_SECRET_USAGE_TYPE_ISCSI && iscsiHasPS) ||
usageType == VIR_SECRET_USAGE_TYPE_VOLUME ||
usageType == VIR_SECRET_USAGE_TYPE_TLS)) {
if (qemuDomainSecretAESSetup(conn, priv, secinfo, srcalias,
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args
new file mode 100644
index 0000000..5808f5d
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args
@@ -0,0 +1,39 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i686 \
+-name QEMUGuest1 \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-M pc \
+-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 secret,id=virtio-disk0-secret0,\
+data=9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1,\
+keyid=masterKey0,iv=AAECAwQFBgcICQoLDA0ODw==,format=base64 \
+-drive file=iscsi://example.org:6000/iqn.1992-01.com.example%3Astorage/1,\
+file.user=myname,file.password-secret=virtio-disk0-secret0,format=raw,if=none,\
+id=drive-virtio-disk0 \
+-device virtio-blk-pci,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,\
+id=virtio-disk0 \
+-object secret,id=virtio-disk1-secret0,\
+data=9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1,\
+keyid=masterKey0,iv=AAECAwQFBgcICQoLDA0ODw==,format=base64 \
+-drive file=iscsi://example.org:6000/iqn.1992-01.com.example%3Astorage/2,\
+file.user=myname,file.password-secret=virtio-disk1-secret0,format=raw,if=none,\
+id=drive-virtio-disk1 \
+-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk1,\
+id=virtio-disk1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.xml
new file mode 100644
index 0000000..63919f1
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.xml
@@ -0,0 +1,43 @@
+<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-i686</emulator>
+ <disk type='network' device='disk'>
+ <driver name='qemu' type='raw'/>
+ <auth username='myname'>
+ <secret type='iscsi' usage='mycluster_myname'/>
+ </auth>
+ <source protocol='iscsi' name='iqn.1992-01.com.example:storage/1'>
+ <host name='example.org' port='6000'/>
+ </source>
+ <target dev='vda' bus='virtio'/>
+ </disk>
+ <disk type='network' device='disk'>
+ <driver name='qemu' type='raw'/>
+ <auth username='myname'>
+ <secret type='iscsi' usage='mycluster_myname'/>
+ </auth>
+ <source protocol='iscsi' name='iqn.1992-01.com.example:storage/2'>
+ <host name='example.org' port='6000'/>
+ </source>
+ <target dev='vdb' bus='virtio'/>
+ </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-hostdev-scsi-virtio-iscsi-auth-AES.args b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.args
new file mode 100644
index 0000000..c77703e
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.args
@@ -0,0 +1,35 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i686 \
+-name QEMUGuest2 \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
+-M pc \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9466-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest2/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x3 \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest2,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-drive file=iscsi://example.org:3260/iqn.1992-01.com.example%3Astorage/1,\
+if=none,format=raw,id=drive-hostdev0 \
+-device scsi-generic,bus=scsi0.0,channel=0,scsi-id=2,lun=4,\
+drive=drive-hostdev0,id=hostdev0 \
+-drive file=iscsi://example.org:3260/iqn.1992-01.com.example%3Astorage/2,\
+if=none,format=raw,id=drive-hostdev1 \
+-device scsi-generic,bus=scsi0.0,channel=0,scsi-id=2,lun=5,\
+drive=drive-hostdev1,id=hostdev1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml
new file mode 100644
index 0000000..0f63f98
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml
@@ -0,0 +1,48 @@
+<domain type='qemu'>
+ <name>QEMUGuest2</name>
+ <uuid>c7a5fdbd-edaf-9466-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</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-i686</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest2'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='scsi' index='0' model='virtio-scsi'/>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source protocol='iscsi' name='iqn.1992-01.com.example:storage/1'>
+ <host name='example.org' port='3260'/>
+ <auth username='myname'>
+ <secret type='iscsi' usage='mycluster_myname'/>
+ </auth>
+ </source>
+ <address type='drive' controller='0' bus='0' target='2' unit='4'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source protocol='iscsi' name='iqn.1992-01.com.example:storage/2'>
+ <host name='example.org' port='3260'/>
+ <auth username='myname'>
+ <secret type='iscsi' usage='mycluster_myname'/>
+ </auth>
+ </source>
+ <address type='drive' controller='0' bus='0' target='2' unit='5'/>
+ </hostdev>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index d6ada22..c0cfc66 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -917,6 +917,10 @@ mymain(void)
DO_TEST("disk-drive-network-nbd-unix", NONE);
DO_TEST("disk-drive-network-iscsi", NONE);
DO_TEST("disk-drive-network-iscsi-auth", NONE);
+# ifdef HAVE_GNUTLS_CIPHER_ENCRYPT
+ DO_TEST("disk-drive-network-iscsi-auth-AES",
+ QEMU_CAPS_OBJECT_SECRET, QEMU_CAPS_ISCSI_PASSWORD_SECRET);
+# endif
DO_TEST("disk-drive-network-iscsi-lun",
QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_VIRTIO_SCSI,
QEMU_CAPS_SCSI_BLOCK);
@@ -2301,6 +2305,12 @@ mymain(void)
DO_TEST("hostdev-scsi-virtio-iscsi-auth",
QEMU_CAPS_VIRTIO_SCSI, QEMU_CAPS_VIRTIO_SCSI,
QEMU_CAPS_DEVICE_SCSI_GENERIC);
+# ifdef HAVE_GNUTLS_CIPHER_ENCRYPT
+ DO_TEST("hostdev-scsi-virtio-iscsi-auth-AES",
+ QEMU_CAPS_VIRTIO_SCSI, QEMU_CAPS_VIRTIO_SCSI,
+ QEMU_CAPS_DEVICE_SCSI_GENERIC, QEMU_CAPS_OBJECT_SECRET,
+ QEMU_CAPS_ISCSI_PASSWORD_SECRET);
+# endif
DO_TEST("hostdev-scsi-vhost-scsi-ccw",
QEMU_CAPS_VIRTIO_SCSI, QEMU_CAPS_DEVICE_VHOST_SCSI,
QEMU_CAPS_DEVICE_SCSI_GENERIC, QEMU_CAPS_VIRTIO_CCW);
--
2.9.5
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