@@ -63,6 +63,8 @@ BlockDriverState *bdrv_first;
static BlockDriver *first_drv;
+static BlockDriverDirtyHandler *bdrv_dirty_handler = NULL;
+
int path_is_absolute(const char *path)
{
const char *p;
@@ -613,6 +615,10 @@ int bdrv_write(BlockDriverState *bs, int64_t sector_num,
if (bdrv_check_request(bs, sector_num, nb_sectors))
return -EIO;
+ if(bdrv_dirty_handler != NULL) {
+ bdrv_dirty_handler(bs, sector_num, nb_sectors);
+ }
+
return drv->bdrv_write(bs, sector_num, buf, nb_sectors);
}
@@ -1144,6 +1150,11 @@ int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
return -ENOTSUP;
if (bdrv_check_request(bs, sector_num, nb_sectors))
return -EIO;
+
+ if(bdrv_dirty_handler != NULL) {
+ bdrv_dirty_handler(bs, sector_num, nb_sectors);
+ }
+
return drv->bdrv_write_compressed(bs, sector_num, buf, nb_sectors);
}
@@ -1338,7 +1349,11 @@ BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
return NULL;
if (bdrv_check_request(bs, sector_num, nb_sectors))
return NULL;
-
+
+ if(bdrv_dirty_handler != NULL) {
+ bdrv_dirty_handler(bs, sector_num, nb_sectors);
+ }
+
ret = drv->bdrv_aio_writev(bs, sector_num, qiov, nb_sectors,
cb, opaque);
@@ -1632,6 +1647,17 @@ BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
return NULL;
}
+void register_bdrv_dirty_tracking(BlockDriverDirtyHandler *dirty_handler)
+{
+ bdrv_dirty_handler = dirty_handler;
+}
+
+void unregister_bdrv_dirty_tracking(void)
+{
+ bdrv_dirty_handler = NULL;
+}
+
+
void *qemu_blockalign(BlockDriverState *bs, size_t size)
{
return qemu_memalign((bs && bs->buffer_alignment) ? bs->buffer_alignment : 512, size);
@@ -79,6 +79,8 @@ void bdrv_register(BlockDriver *bdrv);
typedef struct BlockDriverAIOCB BlockDriverAIOCB;
typedef void BlockDriverCompletionFunc(void *opaque, int ret);
+typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector,
+ int sector_num);
BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
QEMUIOVector *iov, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque);
@@ -165,4 +167,7 @@ int bdrv_put_buffer(BlockDriverState *bs, const uint8_t *buf,
int bdrv_get_buffer(BlockDriverState *bs, uint8_t *buf, int64_t pos, int size);
+void register_bdrv_dirty_tracking(BlockDriverDirtyHandler *dirty_handler);
+void unregister_bdrv_dirty_tracking(void);
+
#endif
@@ -156,6 +156,7 @@ struct BlockDriverState {
int cyls, heads, secs, translation;
int type;
char device_name[32];
+ void *dirty_control;
BlockDriverState *next;
void *private;
};