[PULL 10/22] qcow2: Fix open/create to open images with no_co_wrapper

[Kevin Wolf]

.bdrv_co_create implementations run in a coroutine, as does
qcow2_do_open(). Therefore they are not allowed to open images directly.
Fix the calls to use the corresponding no_co_wrappers instead.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230126172432.436111-7-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2.c | 43 ++++++++++++++++++++++---------------------
 1 file changed, 22 insertions(+), 21 deletions(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index 21aa4c6b7a..ee0e5b45cc 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1617,9 +1617,9 @@ static int coroutine_fn qcow2_do_open(BlockDriverState 
*bs, QDict *options,
 
     if (open_data_file) {
         /* Open external data file */
-        s->data_file = bdrv_open_child(NULL, options, "data-file", bs,
-                                       &child_of_bds, BDRV_CHILD_DATA,
-                                       true, errp);
+        s->data_file = bdrv_co_open_child(NULL, options, "data-file", bs,
+                                          &child_of_bds, BDRV_CHILD_DATA,
+                                          true, errp);
         if (*errp) {
             ret = -EINVAL;
             goto fail;
@@ -1627,9 +1627,10 @@ static int coroutine_fn qcow2_do_open(BlockDriverState 
*bs, QDict *options,
 
         if (s->incompatible_features & QCOW2_INCOMPAT_DATA_FILE) {
             if (!s->data_file && s->image_data_file) {
-                s->data_file = bdrv_open_child(s->image_data_file, options,
-                                               "data-file", bs, &child_of_bds,
-                                               BDRV_CHILD_DATA, false, errp);
+                s->data_file = bdrv_co_open_child(s->image_data_file, options,
+                                                  "data-file", bs,
+                                                  &child_of_bds,
+                                                  BDRV_CHILD_DATA, false, 
errp);
                 if (!s->data_file) {
                     ret = -EINVAL;
                     goto fail;
@@ -3454,7 +3455,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
     assert(create_options->driver == BLOCKDEV_DRIVER_QCOW2);
     qcow2_opts = &create_options->u.qcow2;
 
-    bs = bdrv_open_blockdev_ref(qcow2_opts->file, errp);
+    bs = bdrv_co_open_blockdev_ref(qcow2_opts->file, errp);
     if (bs == NULL) {
         return -EIO;
     }
@@ -3596,7 +3597,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
             ret = -EINVAL;
             goto out;
         }
-        data_bs = bdrv_open_blockdev_ref(qcow2_opts->data_file, errp);
+        data_bs = bdrv_co_open_blockdev_ref(qcow2_opts->data_file, errp);
         if (data_bs == NULL) {
             ret = -EIO;
             goto out;
@@ -3629,8 +3630,8 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
     }
 
     /* Create BlockBackend to write to the image */
-    blk = blk_new_with_bs(bs, BLK_PERM_WRITE | BLK_PERM_RESIZE, BLK_PERM_ALL,
-                          errp);
+    blk = blk_co_new_with_bs(bs, BLK_PERM_WRITE | BLK_PERM_RESIZE, 
BLK_PERM_ALL,
+                             errp);
     if (!blk) {
         ret = -EPERM;
         goto out;
@@ -3712,9 +3713,9 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
     if (data_bs) {
         qdict_put_str(options, "data-file", data_bs->node_name);
     }
-    blk = blk_new_open(NULL, NULL, options,
-                       BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_NO_FLUSH,
-                       errp);
+    blk = blk_co_new_open(NULL, NULL, options,
+                          BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_NO_FLUSH,
+                          errp);
     if (blk == NULL) {
         ret = -EIO;
         goto out;
@@ -3793,9 +3794,9 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
     if (data_bs) {
         qdict_put_str(options, "data-file", data_bs->node_name);
     }
-    blk = blk_new_open(NULL, NULL, options,
-                       BDRV_O_RDWR | BDRV_O_NO_BACKING | BDRV_O_NO_IO,
-                       errp);
+    blk = blk_co_new_open(NULL, NULL, options,
+                          BDRV_O_RDWR | BDRV_O_NO_BACKING | BDRV_O_NO_IO,
+                          errp);
     if (blk == NULL) {
         ret = -EIO;
         goto out;
@@ -3877,8 +3878,8 @@ static int coroutine_fn qcow2_co_create_opts(BlockDriver 
*drv,
         goto finish;
     }
 
-    bs = bdrv_open(filename, NULL, NULL,
-                   BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, errp);
+    bs = bdrv_co_open(filename, NULL, NULL,
+                      BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, errp);
     if (bs == NULL) {
         ret = -EIO;
         goto finish;
@@ -3892,9 +3893,9 @@ static int coroutine_fn qcow2_co_create_opts(BlockDriver 
*drv,
             goto finish;
         }
 
-        data_bs = bdrv_open(val, NULL, NULL,
-                            BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL,
-                            errp);
+        data_bs = bdrv_co_open(val, NULL, NULL,
+                               BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL,
+                               errp);
         if (data_bs == NULL) {
             ret = -EIO;
             goto finish;
-- 
2.39.2