monitor: Rework early disk password inquiry (Jan Kiszka)

Reading the passwords for encrypted hard disks during early startup is
broken (I guess for quiet a while now):
 - No monitor terminal is ready for input at this point
 - Forcing all mux'ed terminals into monitor mode can confuse other
   users of that channels

To overcome these issues and to lay the ground for a clean decoupling of
monitor terminals, this patch changes the initial password inquiry as
follows:
 - Prevent autostart if there is some encrypted disk
 - Once the user tries to resume the VM, prompt for all missing
   passwords
 - Only resume if all passwords were accepted

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6707 c046a42c-6fe2-441c-8c8c-71466251a162

2 files changed, 7 insertions, 4 deletions

diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 342b0e873a..0c8d9cca83 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -11,6 +11,7 @@
 #include "usb.h"
 #include "block.h"
 #include "scsi-disk.h"
+#include "console.h"
 
 //#define DEBUG_MSD
 
@@ -513,7 +514,7 @@ static void usb_msd_handle_destroy(USBDevice *dev)
     qemu_free(s);
 }
 
-USBDevice *usb_msd_init(const char *filename)
+USBDevice *usb_msd_init(const char *filename, BlockDriverState **pbs)
 {
     MSDState *s;
     BlockDriverState *bdrv;
@@ -552,9 +553,8 @@ USBDevice *usb_msd_init(const char *filename)
     bdrv = bdrv_new("usb");
     if (bdrv_open2(bdrv, filename, 0, drv) < 0)
         goto fail;
-    if (qemu_key_check(bdrv, filename))
-        goto fail;
     s->bs = bdrv;
+    *pbs = bdrv;
 
     s->dev.speed = USB_SPEED_FULL;
     s->dev.handle_packet = usb_generic_handle_packet;
diff --git a/hw/usb.h b/hw/usb.h
index 4204808a00..4cd832d492 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -21,6 +21,9 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
+#include "block.h"
+
 #define USB_TOKEN_SETUP 0x2d
 #define USB_TOKEN_IN    0x69 /* device -> host */
 #define USB_TOKEN_OUT   0xe1 /* host -> device */
@@ -250,7 +253,7 @@ USBDevice *usb_keyboard_init(void);
 void usb_hid_datain_cb(USBDevice *dev, void *opaque, void (*datain)(void *));
 
 /* usb-msd.c */
-USBDevice *usb_msd_init(const char *filename);
+USBDevice *usb_msd_init(const char *filename, BlockDriverState **pbs);
 
 /* usb-net.c */
 USBDevice *usb_net_init(NICInfo *nd);