[Qemu-devel] [PATCH v8 2/3] block: add support for encryption secrets in block I/O tests

["Daniel P. Berrange" <berrange@redhat.com>]

The LUKS block driver tests will require the ability to specify
encryption secrets with block devices. This requires using the
--object argument to qemu-img/qemu-io to create a 'secret'
object.

When the IMGKEYSECRET env variable is set, it provides the
password to be associated with a secret called 'keysec0'

The _qemu_img_wrapper function isn't modified as that needs
to cope with differing syntax for subcommands, so can't be
made to use the image opts syntax unconditionally.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 tests/qemu-iotests/common        |  1 +
 tests/qemu-iotests/common.config |  6 ++++++
 tests/qemu-iotests/common.filter |  3 ++-
 tests/qemu-iotests/common.rc     | 16 +++++++++++++---
 4 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/common b/tests/qemu-iotests/common
index fe3b1a0..e87287c 100644
--- a/tests/qemu-iotests/common
+++ b/tests/qemu-iotests/common
@@ -53,6 +53,7 @@ export QEMU_IO_OPTIONS=""
 export CACHEMODE_IS_DEFAULT=true
 export QEMU_OPTIONS="-nodefaults"
 export VALGRIND_QEMU=
+export IMGKEYSECRET=
 export IMGOPTSSYNTAX=false
 
 for r
diff --git a/tests/qemu-iotests/common.config b/tests/qemu-iotests/common.config
index ea698da..f6384fb 100644
--- a/tests/qemu-iotests/common.config
+++ b/tests/qemu-iotests/common.config
@@ -126,6 +126,9 @@ _qemu_io_wrapper()
     local QEMU_IO_ARGS="$QEMU_IO_OPTIONS"
     if [ "$IMGOPTSSYNTAX" = "true" ]; then
         QEMU_IO_ARGS="--image-opts $QEMU_IO_ARGS"
+        if [ -n "$IMGKEYSECRET" ]; then
+            QEMU_IO_ARGS="--object secret,id=keysec0,data=$IMGKEYSECRET $QEMU_IO_ARGS"
+        fi
     fi
     local RETVAL
     (
@@ -161,6 +164,9 @@ export QEMU_NBD=_qemu_nbd_wrapper
 QEMU_IMG_EXTRA_ARGS=
 if [ "$IMGOPTSSYNTAX" = "true" ]; then
     QEMU_IMG_EXTRA_ARGS="--image-opts $QEMU_IMG_EXTRA_ARGS"
+    if [ -n "$IMGKEYSECRET" ]; then
+        QEMU_IMG_EXTRA_ARGS="--object secret,id=keysec0,data=$IMGKEYSECRET $QEMU_IMG_EXTRA_ARGS"
+    fi
 fi
 export QEMU_IMG_EXTRA_ARGS
 
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 8a6e1b5..d8188a5 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -97,7 +97,8 @@ _filter_img_create()
         -e "s# block_state_zero=\\(on\\|off\\)##g" \
         -e "s# log_size=[0-9]\\+##g" \
         -e "s/archipelago:a/TEST_DIR\//g" \
-        -e "s# refcount_bits=[0-9]\\+##g"
+        -e "s# refcount_bits=[0-9]\\+##g" \
+        -e "s# key-secret=[a-zA-Z0-9]\\+##g"
 }
 
 _filter_img_info()
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index b702653..c72bdb3 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -129,6 +129,7 @@ _make_test_img()
     local img_name=""
     local use_backing=0
     local backing_file=""
+    local object_options=""
 
     if [ -n "$TEST_IMG_FILE" ]; then
         img_name=$TEST_IMG_FILE
@@ -139,6 +140,10 @@ _make_test_img()
     if [ -n "$IMGOPTS" ]; then
         optstr=$(_optstr_add "$optstr" "$IMGOPTS")
     fi
+    if [ -n "$IMGKEYSECRET" ]; then
+        object_options="--object secret,id=keysec0,data=$IMGKEYSECRET"
+        optstr=$(_optstr_add "$optstr" "key-secret=keysec0")
+    fi
 
     if [ "$1" = "-b" ]; then
         use_backing=1
@@ -156,9 +161,9 @@ _make_test_img()
     # XXX(hch): have global image options?
     (
      if [ $use_backing = 1 ]; then
-        $QEMU_IMG create -f $IMGFMT $extra_img_options -b "$backing_file" "$img_name" $image_size 2>&1
+        $QEMU_IMG create $object_options -f $IMGFMT $extra_img_options -b "$backing_file" "$img_name" $image_size 2>&1
      else
-        $QEMU_IMG create -f $IMGFMT $extra_img_options "$img_name" $image_size 2>&1
+        $QEMU_IMG create $object_options -f $IMGFMT $extra_img_options "$img_name" $image_size 2>&1
      fi
     ) | _filter_img_create
 
@@ -222,7 +227,12 @@ _check_test_img()
 {
     (
         if [ "$IMGOPTSSYNTAX" = "true" ]; then
-            $QEMU_IMG check --image-opts "$@" "$TEST_IMG" 2>&1
+            object_options=
+            if [ -n "$IMGKEYSECRET" ]; then
+                object_options="--object secret,id=keysec0,data=$IMGKEYSECRET"
+            fi
+
+            $QEMU_IMG check $object_options --image-opts "$@" "$TEST_IMG" 2>&1
         else
             $QEMU_IMG check "$@" -f $IMGFMT "$TEST_IMG" 2>&1
         fi
-- 
2.5.5