Re: [libvirt] [REPOST PATCH v6 6/8] qemu: Use secret objects to pass iSCSI passwords

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(a)redhat.com&gt; --- src/qemu/qemu_command.c | 65 +++++++++++++++++----- src/qemu/qemu_command.h | 3 +- src/qemu/qemu_domain.c | 4 ++ src/qemu/qemu_hotplug.c | 50 ++++++++++++++++- ...xml2argv-disk-drive-network-iscsi-auth-AES.args | 41 ++++++++++++++ ...uxml2argv-disk-drive-network-iscsi-auth-AES.xml | 43 ++++++++++++++ ...ml2argv-hostdev-scsi-virtio-iscsi-auth-AES.args | 45 +++++++++++++++ ...xml2argv-hostdev-scsi-virtio-iscsi-auth-AES.xml | 48 ++++++++++++++++ tests/qemuxml2argvtest.c | 10 ++++ 9 files changed, 292 insertions(+), 17 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 577c76b44b..f0724223f2 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c

@@ -1573,7 +1579,9 @@ qemuBuildDriveSourceStr(virDomainDiskDefPtr disk, virBufferAsprintf(buf, "file.debug=%d,", cfg->glusterDebugLevel); } - if (secinfo && secinfo->type == VIR_DOMAIN_SECRET_INFO_TYPE_AES) { + if (secinfo && secinfo->type == VIR_DOMAIN_SECRET_INFO_TYPE_AES && + disk->src->type == VIR_STORAGE_TYPE_NETWORK && + disk->src->protocol == VIR_STORAGE_NET_PROTOCOL_RBD) {

/* NB: If libvirt starts using the more modern option based * syntax to build the command line (e.g., "-drive driver=rbd, * filename=%s,...") instead of the legacy model (e.g."-drive @@ -4892,22 +4900,36 @@ qemuBuildSCSIHostHostdevDrvStr(virDomainHostdevDefPtr dev) } static char * -qemuBuildSCSIiSCSIHostdevDrvStr(virDomainHostdevDefPtr dev) +qemuBuildSCSIiSCSIHostdevDrvStr(virDomainHostdevDefPtr dev, + virQEMUCapsPtr qemuCaps) { char *source = NULL; char *netsource = NULL; + virJSONValuePtr srcprops = NULL; virDomainHostdevSubsysSCSIPtr scsisrc = &dev->source.subsys.u.scsi; virDomainHostdevSubsysSCSIiSCSIPtr iscsisrc = &scsisrc->u.iscsi; qemuDomainStorageSourcePrivatePtr srcPriv = QEMU_DOMAIN_STORAGE_SOURCE_PRIVATE(iscsisrc->src); - /* Rather than pull what we think we want - use the network disk code */ - netsource = qemuBuildNetworkDriveStr(iscsisrc->src, srcPriv ? - srcPriv->secinfo : NULL); - if (!netsource) - goto cleanup; - if (virAsprintf(&source, "file=%s,if=none,format=raw", netsource) < 0) - goto cleanup; + if (qemuDiskSourceNeedsProps(iscsisrc->src, qemuCaps)) { + if (!(srcprops = qemuDiskSourceGetProps(iscsisrc->src))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("failed to build the backend props")); + goto cleanup; + } + + if (!(netsource = virQEMUBuildDriveCommandlineFromJSON(srcprops))) + goto cleanup; + if (virAsprintf(&source, "%s,if=none,format=raw", netsource) < 0) + goto cleanup; + } else { + /* Rather than pull what we think we want - use the network disk code */ + if (!(netsource = qemuBuildNetworkDriveStr(iscsisrc->src, srcPriv ? + srcPriv->secinfo : NULL))) + goto cleanup; + if (virAsprintf(&source, "file=%s,if=none,format=raw", netsource) < 0) + goto cleanup; + } cleanup: VIR_FREE(netsource);

diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-iscsi-auth-AES.args