84 cbw_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,  in cbw_co_preadv()  argument
87     return bdrv_co_preadv(bs->file, offset, bytes, qiov, flags);  in cbw_co_preadv()
92     BlockDriverState *bs = opaque;  in block_copy_cb()  local
94     bdrv_dec_in_flight(bs);  in block_copy_cb()
106 static coroutine_fn int cbw_do_copy_before_write(BlockDriverState *bs,  in cbw_do_copy_before_write()  argument
109     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_do_copy_before_write()
132     bdrv_inc_in_flight(bs);  in cbw_do_copy_before_write()
134                      block_copy_cb, bs);  in cbw_do_copy_before_write()
155 cbw_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)  in cbw_co_pdiscard()  argument
157     int ret = cbw_do_copy_before_write(bs, offset, bytes, 0);  in cbw_co_pdiscard()
162     return bdrv_co_pdiscard(bs->file, offset, bytes);  in cbw_co_pdiscard()
166 cbw_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,  in cbw_co_pwrite_zeroes()  argument
169     int ret = cbw_do_copy_before_write(bs, offset, bytes, flags);  in cbw_co_pwrite_zeroes()
174     return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);  in cbw_co_pwrite_zeroes()
178 int cbw_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,  in cbw_co_pwritev()  argument
181     int ret = cbw_do_copy_before_write(bs, offset, bytes, flags);  in cbw_co_pwritev()
186     return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);  in cbw_co_pwritev()
189 static int coroutine_fn GRAPH_RDLOCK cbw_co_flush(BlockDriverState *bs)  in cbw_co_flush()  argument
191     if (!bs->file) {  in cbw_co_flush()
195     return bdrv_co_flush(bs->file->bs);  in cbw_co_flush()
209 cbw_snapshot_read_lock(BlockDriverState *bs, int64_t offset, int64_t bytes,  in cbw_snapshot_read_lock()  argument
212     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_snapshot_read_lock()
239         *file = bs->file;  in cbw_snapshot_read_lock()
246 cbw_snapshot_read_unlock(BlockDriverState *bs, BlockReq *req)  in cbw_snapshot_read_unlock()  argument
248     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_snapshot_read_unlock()
262 cbw_co_preadv_snapshot(BlockDriverState *bs, int64_t offset, int64_t bytes,  in cbw_co_preadv_snapshot()  argument
273         req = cbw_snapshot_read_lock(bs, offset, bytes, &cur_bytes, &file);  in cbw_co_preadv_snapshot()
280         cbw_snapshot_read_unlock(bs, req);  in cbw_co_preadv_snapshot()
294 cbw_co_snapshot_block_status(BlockDriverState *bs,  in cbw_co_snapshot_block_status()  argument
299     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_co_snapshot_block_status()
305     req = cbw_snapshot_read_lock(bs, offset, bytes, &cur_bytes, &child);  in cbw_co_snapshot_block_status()
310     ret = bdrv_co_block_status(child->bs, offset, cur_bytes, pnum, map, file);  in cbw_co_snapshot_block_status()
321     cbw_snapshot_read_unlock(bs, req);  in cbw_co_snapshot_block_status()
327 cbw_co_pdiscard_snapshot(BlockDriverState *bs, int64_t offset, int64_t bytes)  in cbw_co_pdiscard_snapshot()  argument
329     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_co_pdiscard_snapshot()
350 static void GRAPH_RDLOCK cbw_refresh_filename(BlockDriverState *bs)  in cbw_refresh_filename()  argument
352     pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),  in cbw_refresh_filename()
353             bs->file->bs->filename);  in cbw_refresh_filename()
357 cbw_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,  in cbw_child_perm()  argument
362     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_child_perm()
377         bdrv_default_perms(bs, c, role, reopen_queue,  in cbw_child_perm()
380         if (!QLIST_EMPTY(&bs->parents)) {  in cbw_child_perm()
429 static int cbw_open(BlockDriverState *bs, QDict *options, int flags,  in cbw_open()  argument
433     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_open()
447     ret = bdrv_open_file_child(NULL, options, "file", bs, errp);  in cbw_open()
452     s->target = bdrv_open_child(NULL, options, "target", bs, &child_of_bds,  in cbw_open()
472     bs->total_sectors = bs->file->bs->total_sectors;  in cbw_open()
473     bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |  in cbw_open()
474             (BDRV_REQ_FUA & bs->file->bs->supported_write_flags);  in cbw_open()
475     bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |  in cbw_open()
477              bs->file->bs->supported_zero_flags);  in cbw_open()
480     s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap,  in cbw_open()
489     s->done_bitmap = bdrv_create_dirty_bitmap(bs, cluster_size, NULL, errp);  in cbw_open()
496     s->access_bitmap = bdrv_create_dirty_bitmap(bs, cluster_size, NULL, errp);  in cbw_open()
510 static void cbw_close(BlockDriverState *bs)  in cbw_close()  argument
512     BDRVCopyBeforeWriteState *s = bs->opaque;  in cbw_close()
579 void bdrv_cbw_drop(BlockDriverState *bs)  in bdrv_cbw_drop()  argument
582     bdrv_drop_filter(bs, &error_abort);  in bdrv_cbw_drop()
583     bdrv_unref(bs);  in bdrv_cbw_drop()