Configurable block format whitelist
We have code for a quite a few block formats. While I trust that all
of these formats are useful at least for some people in some
circumstances, some of them are of a kind that friends don't let
friends use in production.
This patch provides an optional block format whitelist, default off.
If a whitelist is configured with --block-drv-whitelist, QEMU proper
can use only whitelisted formats. Other programs, like qemu-img, are
not affected.
Drivers for formats off the whitelist still participate in format
probing, to ensure all programs probe exactly the same. Without that,
QEMU proper would be prone to treat images with a format off the
whitelist as raw when the image's format is probed.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/configure b/configure
index aa2cc43..fb66246 100755
--- a/configure
+++ b/configure
@@ -38,6 +38,7 @@
audio_drv_list=""
audio_card_list="ac97 es1370 sb16"
audio_possible_cards="ac97 es1370 sb16 cs4231a adlib gus"
+block_drv_whitelist=""
host_cc="gcc"
ar="ar"
make="make"
@@ -430,6 +431,8 @@
;;
--audio-drv-list=*) audio_drv_list="$optarg"
;;
+ --block-drv-whitelist=*) block_drv_whitelist=`echo "$optarg" | sed -e 's/,/ /g'`
+ ;;
--enable-debug-tcg) debug_tcg="yes"
;;
--disable-debug-tcg) debug_tcg="no"
@@ -661,6 +664,8 @@
echo " Available drivers: $audio_possible_drivers"
echo " --audio-card-list=LIST set list of emulated audio cards [$audio_card_list]"
echo " Available cards: $audio_possible_cards"
+echo " --block-drv-whitelist=L set block driver whitelist"
+echo " (affects only QEMU, not qemu-img)"
echo " --enable-mixemu enable mixer emulation"
echo " --disable-xen disable xen backend driver support"
echo " --enable-xen enable xen backend driver support"
@@ -1826,6 +1831,7 @@
echo "mingw32 support $mingw32"
echo "Audio drivers $audio_drv_list"
echo "Extra audio cards $audio_card_list"
+echo "Block whitelist $block_drv_whitelist"
echo "Mixer emulation $mixemu"
echo "VNC TLS support $vnc_tls"
echo "VNC SASL support $vnc_sasl"
@@ -1948,6 +1954,7 @@
if test "$audio_win_int" = "yes" ; then
echo "CONFIG_AUDIO_WIN_INT=y" >> $config_host_mak
fi
+echo "CONFIG_BDRV_WHITELIST=$block_drv_whitelist" >> $config_host_mak
if test "$mixemu" = "yes" ; then
echo "CONFIG_MIXEMU=y" >> $config_host_mak
fi
