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block: Add bdrv_next_monitor_owned()

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Add a function for iterating over all monitor-owned BlockDriverStates so
the generic block layer can do so.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2016-03-16 19:54:41 +01:00 committed by Kevin Wolf
parent fe1a9cbc33
commit 262b4e8f74
4 changed files with 17 additions and 0 deletions
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7
blockdev.c
View File

@ -723,6 +723,13 @@ void blockdev_close_all_bdrv_states(void)
}
}
/* Iterates over the list of monitor-owned BlockDriverStates */
BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs)
{
return bs ? QTAILQ_NEXT(bs, monitor_list)
: QTAILQ_FIRST(&monitor_bdrv_states);
}
static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to,
Error **errp)
{

1
include/block/block.h
View File

@ -412,6 +412,7 @@ BlockDriverState *bdrv_lookup_bs(const char *device,
bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base);
BlockDriverState *bdrv_next_node(BlockDriverState *bs);
BlockDriverState *bdrv_next(BlockDriverState *bs);
BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs);
int bdrv_is_encrypted(BlockDriverState *bs);
int bdrv_key_required(BlockDriverState *bs);
int bdrv_set_key(BlockDriverState *bs, const char *key);

1
stubs/Makefile.objs
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@ -1,4 +1,5 @@
stub-obj-y += arch-query-cpu-def.o
stub-obj-y += bdrv-next-monitor-owned.o
stub-obj-y += blk-commit-all.o
stub-obj-y += blockdev-close-all-bdrv-states.o
stub-obj-y += clock-warp.o

8
stubs/bdrv-next-monitor-owned.c Normal file
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@ -0,0 +1,8 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "block/block.h"
BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs)
{
return NULL;
}