nbd: Change external interface to BlockBackend

Substitute BlockDriverState by BlockBackend in every globally visible
function provided by nbd.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1416309679-333-5-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 06f901ef6f..22e95d17ee 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -10,6 +10,7 @@
  */
 
 #include "sysemu/blockdev.h"
+#include "sysemu/block-backend.h"
 #include "hw/block/block.h"
 #include "monitor/monitor.h"
 #include "qapi/qmp/qerror.h"
@@ -73,7 +74,7 @@ static void nbd_close_notifier(Notifier *n, void *data)
 void qmp_nbd_server_add(const char *device, bool has_writable, bool writable,
                         Error **errp)
 {
-    BlockDriverState *bs;
+    BlockBackend *blk;
     NBDExport *exp;
     NBDCloseNotifier *n;
 
@@ -87,12 +88,12 @@ void qmp_nbd_server_add(const char *device, bool has_writable, bool writable,
         return;
     }
 
-    bs = bdrv_find(device);
-    if (!bs) {
+    blk = blk_by_name(device);
+    if (!blk) {
         error_set(errp, QERR_DEVICE_NOT_FOUND, device);
         return;
     }
-    if (!bdrv_is_inserted(bs)) {
+    if (!blk_is_inserted(blk)) {
         error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
         return;
     }
@@ -100,18 +101,18 @@ void qmp_nbd_server_add(const char *device, bool has_writable, bool writable,
     if (!has_writable) {
         writable = false;
     }
-    if (bdrv_is_read_only(bs)) {
+    if (blk_is_read_only(blk)) {
         writable = false;
     }
 
-    exp = nbd_export_new(bs, 0, -1, writable ? 0 : NBD_FLAG_READ_ONLY, NULL);
+    exp = nbd_export_new(blk, 0, -1, writable ? 0 : NBD_FLAG_READ_ONLY, NULL);
 
     nbd_export_set_name(exp, device);
 
     n = g_new0(NBDCloseNotifier, 1);
     n->n.notify = nbd_close_notifier;
     n->exp = exp;
-    bdrv_add_close_notifier(bs, &n->n);
+    blk_add_close_notifier(blk, &n->n);
     QTAILQ_INSERT_TAIL(&close_notifiers, n, next);
 }