diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/qcow2.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index be507e7a9c..a5bf20522d 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -890,12 +890,16 @@ static void qcow_flush(BlockDriverState *bs) bdrv_flush(s->hd); } +static int64_t qcow_vm_state_offset(BDRVQcowState *s) +{ + return (int64_t)s->l1_vm_state_index << (s->cluster_bits + s->l2_bits); +} + static int qcow_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) { BDRVQcowState *s = bs->opaque; bdi->cluster_size = s->cluster_size; - bdi->vm_state_offset = (int64_t)s->l1_vm_state_index << - (s->cluster_bits + s->l2_bits); + bdi->vm_state_offset = qcow_vm_state_offset(s); return 0; } @@ -925,26 +929,28 @@ static void dump_refcounts(BlockDriverState *bs) } #endif -static int qcow_put_buffer(BlockDriverState *bs, const uint8_t *buf, +static int qcow_save_vmstate(BlockDriverState *bs, const uint8_t *buf, int64_t pos, int size) { + BDRVQcowState *s = bs->opaque; int growable = bs->growable; bs->growable = 1; - bdrv_pwrite(bs, pos, buf, size); + bdrv_pwrite(bs, qcow_vm_state_offset(s) + pos, buf, size); bs->growable = growable; return size; } -static int qcow_get_buffer(BlockDriverState *bs, uint8_t *buf, +static int qcow_load_vmstate(BlockDriverState *bs, uint8_t *buf, int64_t pos, int size) { + BDRVQcowState *s = bs->opaque; int growable = bs->growable; int ret; bs->growable = 1; - ret = bdrv_pread(bs, pos, buf, size); + ret = bdrv_pread(bs, qcow_vm_state_offset(s) + pos, buf, size); bs->growable = growable; return ret; @@ -1001,8 +1007,8 @@ static BlockDriver bdrv_qcow2 = { .bdrv_snapshot_list = qcow2_snapshot_list, .bdrv_get_info = qcow_get_info, - .bdrv_put_buffer = qcow_put_buffer, - .bdrv_get_buffer = qcow_get_buffer, + .bdrv_save_vmstate = qcow_save_vmstate, + .bdrv_load_vmstate = qcow_load_vmstate, .create_options = qcow_create_options, .bdrv_check = qcow_check, |