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[Qemu-devel] [PATCH v3 4/4] raw: Don't open ZBDs if backend can't handle
From: |
Dmitry Fomichev |
Subject: |
[Qemu-devel] [PATCH v3 4/4] raw: Don't open ZBDs if backend can't handle them |
Date: |
Tue, 23 Jul 2019 18:19:40 -0400 |
Abort opening a zoned device as a raw file in case the chosen
block backend driver lacks proper support for this type of
storage.
Signed-off-by: Dmitry Fomichev <address@hidden>
---
block/file-posix.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/block/file-posix.c b/block/file-posix.c
index e307cab7a4..507dba98c5 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -2870,6 +2870,20 @@ static int raw_check_perm(BlockDriverState *bs, uint64_t
perm, uint64_t shared,
goto fail;
}
}
+
+ /*
+ * If we are opening a zoned block device, check if the backend
+ * driver can properly handle such devices, abort if not.
+ */
+ if (bdrv_is_zoned(bs) &&
+ (shared & BLK_PERM_SUPPORT_ZONED) &&
+ !(perm & BLK_PERM_SUPPORT_ZONED)) {
+ error_setg(errp,
+ "block backend driver doesn't support HM zoned devices");
+ ret = -ENOTSUP;
+ goto fail;
+ }
+
return 0;
fail:
--
2.21.0