[libvirt] [PATCH 3/3] qemu: Add secinfo for hotplug virtio disk

[John Ferlan]

Commit id 'a1344f70a' added AES secret processing for RBD when starting
up a guest. As such, when the hotplug code calls qemuDomainSecretDiskPrepare
an AES secret could be added to the disk about to be hotplugged. If an AES
secret was added, then the hotplug code would need to generate the secret
object because qemuBuildDriveStr would add the "password-secret=" to the
returned 'driveStr' rather than the base64 encoded password.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_hotplug.c | 44 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 38 insertions(+), 6 deletions(-)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index f695903..a85467f 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -310,6 +310,9 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
     bool releaseaddr = false;
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
     const char *src = virDomainDiskGetSource(disk);
+    virJSONValuePtr objProps = NULL;
+    qemuDomainDiskPrivatePtr diskPriv;
+    qemuDomainSecretInfoPtr secinfo;
 
     if (!disk->info.type) {
         if (qemuDomainMachineIsS390CCW(vm->def) &&
@@ -342,6 +345,13 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
     if (qemuDomainSecretDiskPrepare(conn, priv, disk) < 0)
         goto error;
 
+    diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
+    secinfo = diskPriv->secinfo;
+    if (secinfo && secinfo->type == VIR_DOMAIN_SECRET_INFO_TYPE_AES) {
+        if (qemuBuildSecretInfoProps(secinfo, &objProps) < 0)
+            goto error;
+    }
+
     if (!(drivestr = qemuBuildDriveStr(disk, false, priv->qemuCaps)))
         goto error;
 
@@ -354,9 +364,15 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
     if (VIR_REALLOC_N(vm->def->disks, vm->def->ndisks+1) < 0)
         goto error;
 
-    /* Attach the device - 2 step process */
+    /* Attach the device - possible 3 step process */
     qemuDomainObjEnterMonitor(driver, vm);
 
+    if (objProps && qemuMonitorAddObject(priv->mon, "secret",
+                                         secinfo->s.aes.alias,
+                                         objProps) < 0)
+        goto failaddsecret;
+    objProps = NULL;
+
     if (qemuMonitorAddDrive(priv->mon, drivestr) < 0)
         goto failadddrive;
 
@@ -374,6 +390,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
     ret = 0;
 
  cleanup:
+    virJSONValueFree(objProps);
     qemuDomainSecretDiskDestroy(disk);
     VIR_FREE(devstr);
     VIR_FREE(drivestr);
@@ -393,8 +410,13 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
     }
 
  failadddrive:
+    if (objProps)
+        ignore_value(qemuMonitorDelObject(priv->mon, secinfo->s.aes.alias));
+
+ failaddsecret:
     if (qemuDomainObjExitMonitor(driver, vm) < 0)
         releaseaddr = false;
+    objProps = NULL; /* qemuMonitorAddObject consumes props on failure too */
 
  failexitmonitor:
     virDomainAuditDisk(vm, NULL, disk->src, "attach", false);
@@ -3389,6 +3411,8 @@ qemuDomainDetachVirtioDiskDevice(virQEMUDriverPtr driver,
 {
     int ret = -1;
     qemuDomainObjPrivatePtr priv = vm->privateData;
+    qemuDomainDiskPrivatePtr diskPriv = QEMU_DOMAIN_DISK_PRIVATE(detach);
+    qemuDomainSecretInfoPtr secinfo = diskPriv->secinfo;
 
     if (qemuIsMultiFunctionDevice(vm->def, &detach->info)) {
         virReportError(VIR_ERR_OPERATION_FAILED,
@@ -3422,12 +3446,14 @@ qemuDomainDetachVirtioDiskDevice(virQEMUDriverPtr driver,
     qemuDomainMarkDeviceForRemoval(vm, &detach->info);
 
     qemuDomainObjEnterMonitor(driver, vm);
-    if (qemuMonitorDelDevice(priv->mon, detach->info.alias) < 0) {
-        if (qemuDomainObjExitMonitor(driver, vm) < 0)
-            goto cleanup;
-        virDomainAuditDisk(vm, detach->src, NULL, "detach", false);
-        goto cleanup;
+    if (secinfo && secinfo->type == VIR_DOMAIN_SECRET_INFO_TYPE_AES) {
+        if (qemuMonitorDelObject(priv->mon, secinfo->s.aes.alias) < 0)
+            goto faildel;
     }
+
+    if (qemuMonitorDelDevice(priv->mon, detach->info.alias) < 0)
+        goto faildel;
+
     if (qemuDomainObjExitMonitor(driver, vm) < 0)
         goto cleanup;
 
@@ -3437,6 +3463,12 @@ qemuDomainDetachVirtioDiskDevice(virQEMUDriverPtr driver,
  cleanup:
     qemuDomainResetDeviceRemoval(vm);
     return ret;
+
+ faildel:
+    if (qemuDomainObjExitMonitor(driver, vm) < 0)
+        goto cleanup;
+    virDomainAuditDisk(vm, detach->src, NULL, "detach", false);
+    goto cleanup;
 }
 
 static int
-- 
2.5.5