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[Qemu-devel] [PATCH COLO v4 07/15] Add new block driver interface to con
From: |
Wen Congyang |
Subject: |
[Qemu-devel] [PATCH COLO v4 07/15] Add new block driver interface to connect/disconnect the remote target |
Date: |
Fri, 8 May 2015 17:15:59 +0800 |
In some cases, we want to connect/disconnect the remote target when
we need, not in bdrv_open()/bdrv_close().
Signed-off-by: Wen Congyang <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Gonglei <address@hidden>
---
block.c | 24 ++++++++++++++++++++++++
include/block/block.h | 3 +++
include/block/block_int.h | 3 +++
3 files changed, 30 insertions(+)
diff --git a/block.c b/block.c
index 15d21da..050f919 100644
--- a/block.c
+++ b/block.c
@@ -4189,3 +4189,27 @@ BlockAcctStats *bdrv_get_stats(BlockDriverState *bs)
{
return &bs->stats;
}
+
+void bdrv_connect(BlockDriverState *bs, Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_connect) {
+ drv->bdrv_connect(bs, errp);
+ } else if (bs->file) {
+ bdrv_connect(bs->file, errp);
+ } else {
+ error_setg(errp, "this feature or command is not currently supported");
+ }
+}
+
+void bdrv_disconnect(BlockDriverState *bs)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (drv && drv->bdrv_disconnect) {
+ drv->bdrv_disconnect(bs);
+ } else if (bs->file) {
+ bdrv_disconnect(bs->file);
+ }
+}
diff --git a/include/block/block.h b/include/block/block.h
index 006c941..e479a34 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -592,4 +592,7 @@ void bdrv_flush_io_queue(BlockDriverState *bs);
BlockAcctStats *bdrv_get_stats(BlockDriverState *bs);
+void bdrv_connect(BlockDriverState *bs, Error **errp);
+void bdrv_disconnect(BlockDriverState *bs);
+
#endif
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 49ca826..da29fa7 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -290,6 +290,9 @@ struct BlockDriver {
*/
int (*bdrv_probe_geometry)(BlockDriverState *bs, HDGeometry *geo);
+ void (*bdrv_connect)(BlockDriverState *bs, Error **errp);
+ void (*bdrv_disconnect)(BlockDriverState *bs);
+
QLIST_ENTRY(BlockDriver) list;
};
--
2.1.0