83 static int preallocate_drop_resize(BlockDriverState *bs, Error **errp);
140 static int preallocate_open(BlockDriverState *bs, QDict *options, int flags,  in preallocate_open()  argument
143     BDRVPreallocateState *s = bs->opaque;  in preallocate_open()
153     s->drop_resize_bh = qemu_bh_new(preallocate_drop_resize_bh, bs);  in preallocate_open()
155     ret = bdrv_open_file_child(NULL, options, "file", bs, errp);  in preallocate_open()
162     if (!preallocate_absorb_opts(&s->opts, options, bs->file->bs, errp)) {  in preallocate_open()
166     bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |  in preallocate_open()
167         (BDRV_REQ_FUA & bs->file->bs->supported_write_flags);  in preallocate_open()
169     bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |  in preallocate_open()
171             bs->file->bs->supported_zero_flags);  in preallocate_open()
177 preallocate_truncate_to_real_size(BlockDriverState *bs, Error **errp)  in preallocate_truncate_to_real_size()  argument
179     BDRVPreallocateState *s = bs->opaque;  in preallocate_truncate_to_real_size()
183         s->file_end = bdrv_getlength(bs->file->bs);  in preallocate_truncate_to_real_size()
191         ret = bdrv_truncate(bs->file, s->data_end, true, PREALLOC_MODE_OFF, 0,  in preallocate_truncate_to_real_size()
204 static void preallocate_close(BlockDriverState *bs)  in preallocate_close()  argument
206     BDRVPreallocateState *s = bs->opaque;  in preallocate_close()
215         preallocate_truncate_to_real_size(bs, NULL);  in preallocate_close()
238                                  reopen_state->bs->file->bs, errp)) {  in preallocate_reopen_prepare()
249         ret = preallocate_drop_resize(reopen_state->bs, errp);  in preallocate_reopen_prepare()
263     BDRVPreallocateState *s = state->bs->opaque;  in preallocate_reopen_commit()
278 preallocate_co_preadv_part(BlockDriverState *bs, int64_t offset, int64_t bytes,  in preallocate_co_preadv_part()  argument
282     return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,  in preallocate_co_preadv_part()
287 preallocate_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)  in preallocate_co_pdiscard()  argument
289     return bdrv_co_pdiscard(bs->file, offset, bytes);  in preallocate_co_pdiscard()
297 static bool GRAPH_RDLOCK has_prealloc_perms(BlockDriverState *bs)  in has_prealloc_perms()  argument
299     BDRVPreallocateState *s = bs->opaque;  in has_prealloc_perms()
301     if (can_write_resize(bs->file->perm)) {  in has_prealloc_perms()
302         assert(!(bs->file->shared_perm & BLK_PERM_WRITE));  in has_prealloc_perms()
303         assert(!(bs->file->shared_perm & BLK_PERM_RESIZE));  in has_prealloc_perms()
322 handle_write(BlockDriverState *bs, int64_t offset, int64_t bytes,  in handle_write()  argument
325     BDRVPreallocateState *s = bs->opaque;  in handle_write()
329     uint32_t file_align = bs->file->bs->bl.request_alignment;  in handle_write()
334     if (!has_prealloc_perms(bs)) {  in handle_write()
340         s->data_end = bdrv_co_getlength(bs->file->bs);  in handle_write()
362         s->file_end = bdrv_co_getlength(bs->file->bs);  in handle_write()
387             bs->file, prealloc_start, prealloc_end - prealloc_start,  in handle_write()
399 preallocate_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,  in preallocate_co_pwrite_zeroes()  argument
404     if (handle_write(bs, offset, bytes, want_merge_zero)) {  in preallocate_co_pwrite_zeroes()
408     return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);  in preallocate_co_pwrite_zeroes()
412 preallocate_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes,  in preallocate_co_pwritev_part()  argument
416     handle_write(bs, offset, bytes, false);  in preallocate_co_pwritev_part()
418     return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,  in preallocate_co_pwritev_part()
423 preallocate_co_truncate(BlockDriverState *bs, int64_t offset,  in preallocate_co_truncate()  argument
428     BDRVPreallocateState *s = bs->opaque;  in preallocate_co_truncate()
433             s->file_end = bdrv_co_getlength(bs->file->bs);  in preallocate_co_truncate()
462                 ret = bdrv_co_truncate(bs->file, s->data_end, true,  in preallocate_co_truncate()
477     ret = bdrv_co_truncate(bs->file, offset, exact, prealloc, flags, errp);  in preallocate_co_truncate()
483     if (has_prealloc_perms(bs)) {  in preallocate_co_truncate()
489 static int coroutine_fn GRAPH_RDLOCK preallocate_co_flush(BlockDriverState *bs)  in preallocate_co_flush()  argument
491     return bdrv_co_flush(bs->file->bs);  in preallocate_co_flush()
495 preallocate_co_getlength(BlockDriverState *bs)  in preallocate_co_getlength()  argument
498     BDRVPreallocateState *s = bs->opaque;  in preallocate_co_getlength()
504     ret = bdrv_co_getlength(bs->file->bs);  in preallocate_co_getlength()
506     if (has_prealloc_perms(bs)) {  in preallocate_co_getlength()
514 preallocate_drop_resize(BlockDriverState *bs, Error **errp)  in preallocate_drop_resize()  argument
516     BDRVPreallocateState *s = bs->opaque;  in preallocate_drop_resize()
527     ret = preallocate_truncate_to_real_size(bs, errp);  in preallocate_drop_resize()
540     bdrv_child_refresh_perms(bs, bs->file, NULL);  in preallocate_drop_resize()
558 preallocate_set_perm(BlockDriverState *bs, uint64_t perm, uint64_t shared)  in preallocate_set_perm()  argument
560     BDRVPreallocateState *s = bs->opaque;  in preallocate_set_perm()
566                 bs->file->bs->total_sectors * BDRV_SECTOR_SIZE;  in preallocate_set_perm()
573 static void preallocate_child_perm(BlockDriverState *bs, BdrvChild *c,  in preallocate_child_perm()  argument
577     BDRVPreallocateState *s = bs->opaque;  in preallocate_child_perm()
579     bdrv_default_perms(bs, c, role, reopen_queue, perm, shared, nperm, nshared);  in preallocate_child_perm()