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From: Dmitry Fomichev <dmitry.fomichev@wdc.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	John Snow <jsnow@redhat.com>
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>,
	Alistair Francis <alistair.francis@wdc.com>,
	qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: [Qemu-devel] [PATCH v5 4/4] raw: Don't open ZBDs if backend can't handle them
Date: Fri, 23 Aug 2019 15:49:27 -0400
Message-ID: <20190823194927.23278-5-dmitry.fomichev@wdc.com> (raw)
In-Reply-To: <20190823194927.23278-1-dmitry.fomichev@wdc.com>

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 <dmitry.fomichev@wdc.com>
---
 block/file-posix.c | 14 ++++++++++++++
 hw/block/fdc.c     |  2 +-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/block/file-posix.c b/block/file-posix.c
index d9f2fc5e46..090e7c4d2f 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -2884,6 +2884,20 @@ 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:
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index c5f41b3eb6..673a8b39bc 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -570,7 +570,7 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp)
     dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO;
 
     if (!blkconf_apply_backend_options(&dev->conf, read_only, false, false,
-    				       errp)) {
+                                       errp)) {
         return;
     }
 
-- 
2.21.0



  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 19:49 [Qemu-devel] [PATCH v5 0/4] virtio/block: handle zoned backing devices Dmitry Fomichev
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 1/4] block: Add zoned device model property Dmitry Fomichev
2019-08-28  9:21   ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 2/4] raw: Recognize zoned backing devices Dmitry Fomichev
2019-08-28  9:32   ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 3/4] block/ide/scsi: Set BLK_PERM_SUPPORT_ZONED Dmitry Fomichev
2019-08-28  9:34   ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-08-23 19:49 ` Dmitry Fomichev [this message]
2019-08-28  9:38   ` [Qemu-devel] [PATCH v5 4/4] raw: Don't open ZBDs if backend can't handle them Stefan Hajnoczi
2019-08-23 20:08 ` [Qemu-devel] [PATCH v5 0/4] virtio/block: handle zoned backing devices no-reply
2019-08-28  9:41 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-09-04 21:11   ` Dmitry Fomichev

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