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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2011-11-14 12:44:26 +0000
committerKevin Wolf <kwolf@redhat.com>2011-12-05 14:51:37 +0100
commit060f51c9dee3c58e2748c773ef1f7142047a4a2f (patch)
tree5d94aadc9a19778ad0c6628ffc976278679fc2a2 /block.c
parent6aebab140d1891813628f0148c6c4d66b5c1dd66 (diff)
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block: add bdrv_co_is_allocated() interface
This patch introduces the public bdrv_co_is_allocated() interface which can be used to query image allocation status while the VM is running. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c37
1 files changed, 24 insertions, 13 deletions
diff --git a/block.c b/block.c
index 50b058d..d82854a 100644
--- a/block.c
+++ b/block.c
@@ -1896,17 +1896,6 @@ typedef struct BdrvCoIsAllocatedData {
bool done;
} BdrvCoIsAllocatedData;
-/* Coroutine wrapper for bdrv_is_allocated() */
-static void coroutine_fn bdrv_is_allocated_co_entry(void *opaque)
-{
- BdrvCoIsAllocatedData *data = opaque;
- BlockDriverState *bs = data->bs;
-
- data->ret = bs->drv->bdrv_co_is_allocated(bs, data->sector_num,
- data->nb_sectors, data->pnum);
- data->done = true;
-}
-
/*
* Returns true iff the specified sector is present in the disk image. Drivers
* not implementing the functionality are assumed to not support backing files,
@@ -1918,8 +1907,8 @@ static void coroutine_fn bdrv_is_allocated_co_entry(void *opaque)
*
* 'nb_sectors' is the max value 'pnum' should be set to.
*/
-int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- int *pnum)
+int coroutine_fn bdrv_co_is_allocated(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, int *pnum)
{
if (!bs->drv->bdrv_co_is_allocated) {
int64_t n;
@@ -1932,6 +1921,28 @@ int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
return 1;
}
+ return bs->drv->bdrv_co_is_allocated(bs, sector_num, nb_sectors, pnum);
+}
+
+/* Coroutine wrapper for bdrv_is_allocated() */
+static void coroutine_fn bdrv_is_allocated_co_entry(void *opaque)
+{
+ BdrvCoIsAllocatedData *data = opaque;
+ BlockDriverState *bs = data->bs;
+
+ data->ret = bdrv_co_is_allocated(bs, data->sector_num, data->nb_sectors,
+ data->pnum);
+ data->done = true;
+}
+
+/*
+ * Synchronous wrapper around bdrv_co_is_allocated().
+ *
+ * See bdrv_co_is_allocated() for details.
+ */
+int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
+ int *pnum)
+{
Coroutine *co;
BdrvCoIsAllocatedData data = {
.bs = bs,