From: Markus Armbruster <armbru@redhat.com>
Date: Wed, 2 Jun 2010 16:55:20 +0000 (+0200)
Subject: block: New bdrv_next()
X-Git-Tag: TizenStudio_2.0_p2.3~4526
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=081dd8a0220c131c73c421a7a29b7a5741d959ab;p=sdk%2Femulator%2Fqemu.git

block: New bdrv_next()

This is a more flexible alternative to bdrv_iterate().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block.c b/block.c
index df2d3a6..383d59f 100644
--- a/block.c
+++ b/block.c
@@ -1330,6 +1330,14 @@ BlockDriverState *bdrv_find(const char *name)
     return NULL;
 }
 
+BlockDriverState *bdrv_next(BlockDriverState *bs)
+{
+    if (!bs) {
+        return QTAILQ_FIRST(&bdrv_states);
+    }
+    return QTAILQ_NEXT(bs, list);
+}
+
 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), void *opaque)
 {
     BlockDriverState *bs;
diff --git a/block.h b/block.h
index 1f69cbd..9df9b38 100644
--- a/block.h
+++ b/block.h
@@ -168,6 +168,7 @@ void bdrv_set_change_cb(BlockDriverState *bs,
                         void (*change_cb)(void *opaque), void *opaque);
 void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size);
 BlockDriverState *bdrv_find(const char *name);
+BlockDriverState *bdrv_next(BlockDriverState *bs);
 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs),
                   void *opaque);
 int bdrv_is_encrypted(BlockDriverState *bs);