diff options
Diffstat (limited to 'block/cloop.c')
-rw-r--r-- | block/cloop.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/block/cloop.c b/block/cloop.c index c99192a57f..443af1444e 100644 --- a/block/cloop.c +++ b/block/cloop.c @@ -24,6 +24,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/error-report.h" +#include "block/block-io.h" #include "block/block_int.h" #include "qemu/module.h" #include "qemu/bswap.h" @@ -66,19 +67,24 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags, uint32_t offsets_size, max_compressed_block_size = 1, i; int ret; + GLOBAL_STATE_CODE(); + + bdrv_graph_rdlock_main_loop(); ret = bdrv_apply_auto_read_only(bs, NULL, errp); + bdrv_graph_rdunlock_main_loop(); if (ret < 0) { return ret; } - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, - BDRV_CHILD_IMAGE, false, errp); - if (!bs->file) { - return -EINVAL; + ret = bdrv_open_file_child(NULL, options, "file", bs, errp); + if (ret < 0) { + return ret; } + GRAPH_RDLOCK_GUARD_MAINLOOP(); + /* read header */ - ret = bdrv_pread(bs->file, 128, &s->block_size, 4); + ret = bdrv_pread(bs->file, 128, 4, &s->block_size, 0); if (ret < 0) { return ret; } @@ -104,7 +110,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags, return -EINVAL; } - ret = bdrv_pread(bs->file, 128 + 4, &s->n_blocks, 4); + ret = bdrv_pread(bs->file, 128 + 4, 4, &s->n_blocks, 0); if (ret < 0) { return ret; } @@ -135,7 +141,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags, return -ENOMEM; } - ret = bdrv_pread(bs->file, 128 + 4 + 4, s->offsets, offsets_size); + ret = bdrv_pread(bs->file, 128 + 4 + 4, offsets_size, s->offsets, 0); if (ret < 0) { goto fail; } @@ -212,7 +218,8 @@ static void cloop_refresh_limits(BlockDriverState *bs, Error **errp) bs->bl.request_alignment = BDRV_SECTOR_SIZE; /* No sub-sector I/O */ } -static inline int cloop_read_block(BlockDriverState *bs, int block_num) +static int coroutine_fn GRAPH_RDLOCK +cloop_read_block(BlockDriverState *bs, int block_num) { BDRVCloopState *s = bs->opaque; @@ -220,9 +227,9 @@ static inline int cloop_read_block(BlockDriverState *bs, int block_num) int ret; uint32_t bytes = s->offsets[block_num + 1] - s->offsets[block_num]; - ret = bdrv_pread(bs->file, s->offsets[block_num], - s->compressed_block, bytes); - if (ret != bytes) { + ret = bdrv_co_pread(bs->file, s->offsets[block_num], bytes, + s->compressed_block, 0); + if (ret < 0) { return -1; } @@ -244,9 +251,9 @@ static inline int cloop_read_block(BlockDriverState *bs, int block_num) return 0; } -static int coroutine_fn -cloop_co_preadv(BlockDriverState *bs, uint64_t offset, uint64_t bytes, - QEMUIOVector *qiov, int flags) +static int coroutine_fn GRAPH_RDLOCK +cloop_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes, + QEMUIOVector *qiov, BdrvRequestFlags flags) { BDRVCloopState *s = bs->opaque; uint64_t sector_num = offset >> BDRV_SECTOR_BITS; |