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[Qemu-devel] [PATCH RESEND 31/50] block: Add blk_insert_bs()
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH RESEND 31/50] block: Add blk_insert_bs() |
Date: |
Tue, 27 Jan 2015 14:46:04 -0500 |
This function associates the given BlockDriverState with the given
BlockBackend.
Signed-off-by: Max Reitz <address@hidden>
---
block/block-backend.c | 16 ++++++++++++++++
include/sysemu/block-backend.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index 760558f..656ebfc 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -312,6 +312,22 @@ void blk_hide_on_behalf_of_do_drive_del(BlockBackend *blk)
}
/*
+ * Associates a new BlockDriverState with @blk.
+ */
+void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs)
+{
+ if (bs->blk == blk) {
+ return;
+ }
+
+ assert(!blk->bs);
+ assert(!bs->blk);
+ bdrv_ref(bs);
+ blk->bs = bs;
+ bs->blk = blk;
+}
+
+/*
* Attach device model @dev to @blk.
* Return 0 on success, -EBUSY when a device model is attached already.
*/
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index afb62e1..b6cf5bf 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -72,6 +72,7 @@ BlockBackend *blk_by_name(const char *name);
BlockBackend *blk_next(BlockBackend *blk);
BlockDriverState *blk_bs(BlockBackend *blk);
+void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs);
void blk_hide_on_behalf_of_do_drive_del(BlockBackend *blk);
--
2.1.0
- [Qemu-devel] [PATCH RESEND 27/50] blockdev: Check BB validity in blockdev-backup, (continued)
- [Qemu-devel] [PATCH RESEND 27/50] blockdev: Check BB validity in blockdev-backup, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 29/50] blockdev: Check BB validity in find_block_job(), Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 23/50] blockdev: Catch NULL BDS in block_set_io_throttle, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 30/50] blockdev: Check BB validity in change-backing-file, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 28/50] blockdev: Check BB validity in drive-mirror, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 31/50] block: Add blk_insert_bs(),
Max Reitz <=
- [Qemu-devel] [PATCH RESEND 32/50] blockdev: Check BB validity in eject and change, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 34/50] blockdev: Do not create BDS for empty drive, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 36/50] blockdev: Allow more options for BB-less BDS tree, Max Reitz, 2015/01/27
- [Qemu-devel] [PATCH RESEND 38/50] blockdev: Add blockdev-open-tray, Max Reitz, 2015/01/27