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[PATCH v4 15/34] block: Distinguish paths in *_format_default_perms


From: Max Reitz
Subject: [PATCH v4 15/34] block: Distinguish paths in *_format_default_perms
Date: Wed, 13 May 2020 13:05:25 +0200

bdrv_format_default_perms() has one code path for backing files, and one
for storage files.  We want to pull them out into own functions, so
make sure they are completely distinct before so the next patches will
be a bit cleaner.

Signed-off-by: Max Reitz <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
 block.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/block.c b/block.c
index be9bfa9d46..b3e7ae70c7 100644
--- a/block.c
+++ b/block.c
@@ -2497,6 +2497,13 @@ void bdrv_format_default_perms(BlockDriverState *bs, 
BdrvChild *c,
             perm |= BLK_PERM_CONSISTENT_READ;
         }
         shared &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
+
+        if (bs->open_flags & BDRV_O_INACTIVE) {
+            shared |= BLK_PERM_WRITE | BLK_PERM_RESIZE;
+        }
+
+        *nperm = perm;
+        *nshared = shared;
     } else {
         /* We want consistent read from backing files if the parent needs it.
          * No other operations are performed on backing files. */
@@ -2513,14 +2520,14 @@ void bdrv_format_default_perms(BlockDriverState *bs, 
BdrvChild *c,
 
         shared |= BLK_PERM_CONSISTENT_READ | BLK_PERM_GRAPH_MOD |
                   BLK_PERM_WRITE_UNCHANGED;
-    }
 
-    if (bs->open_flags & BDRV_O_INACTIVE) {
-        shared |= BLK_PERM_WRITE | BLK_PERM_RESIZE;
-    }
+        if (bs->open_flags & BDRV_O_INACTIVE) {
+            shared |= BLK_PERM_WRITE | BLK_PERM_RESIZE;
+        }
 
-    *nperm = perm;
-    *nshared = shared;
+        *nperm = perm;
+        *nshared = shared;
+    }
 }
 
 uint64_t bdrv_qapi_perm_to_blk_perm(BlockPermission qapi_perm)
-- 
2.26.2




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