1 /* 2 * Block layer I/O functions 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #ifndef BLOCK_COROUTINES_H 26 #define BLOCK_COROUTINES_H 27 28 #include "block/block_int.h" 29 30 /* For blk_bs() in generated block/block-gen.c */ 31 #include "sysemu/block-backend.h" 32 33 /* 34 * I/O API functions. These functions are thread-safe. 35 * 36 * See include/block/block-io.h for more information about 37 * the I/O API. 38 */ 39 40 int coroutine_fn GRAPH_RDLOCK 41 bdrv_co_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); 42 43 int coroutine_fn GRAPH_RDLOCK 44 bdrv_co_invalidate_cache(BlockDriverState *bs, Error **errp); 45 46 int coroutine_fn GRAPH_RDLOCK 47 bdrv_co_common_block_status_above(BlockDriverState *bs, 48 BlockDriverState *base, 49 bool include_base, 50 bool want_zero, 51 int64_t offset, 52 int64_t bytes, 53 int64_t *pnum, 54 int64_t *map, 55 BlockDriverState **file, 56 int *depth); 57 58 int coroutine_fn GRAPH_RDLOCK 59 bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 60 61 int coroutine_fn GRAPH_RDLOCK 62 bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 63 64 int coroutine_fn GRAPH_RDLOCK 65 nbd_co_do_establish_connection(BlockDriverState *bs, bool blocking, 66 Error **errp); 67 68 69 /* 70 * "I/O or GS" API functions. These functions can run without 71 * the BQL, but only in one specific iothread/main loop. 72 * 73 * See include/block/block-io.h for more information about 74 * the "I/O or GS" API. 75 */ 76 77 int co_wrapper_mixed_bdrv_rdlock 78 bdrv_common_block_status_above(BlockDriverState *bs, 79 BlockDriverState *base, 80 bool include_base, 81 bool want_zero, 82 int64_t offset, 83 int64_t bytes, 84 int64_t *pnum, 85 int64_t *map, 86 BlockDriverState **file, 87 int *depth); 88 89 int co_wrapper_mixed_bdrv_rdlock 90 nbd_do_establish_connection(BlockDriverState *bs, bool blocking, Error **errp); 91 92 #endif /* BLOCK_COROUTINES_H */ 93