diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2021-09-03 13:27:57 +0300 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2021-09-29 13:46:31 -0500 |
| commit | b984b2968b415759307558493b1a2bb6070a2251 (patch) | |
| tree | e271ebabc9934873245e9df10677605bffff5cf3 /block | |
| parent | 09615257058a0ae87b837bb041f56f7312d9ead8 (diff) | |
block/io: bring request check to bdrv_co_(read,write)v_vmstate
Only qcow2 driver supports vmstate.
In qcow2 these requests go through .bdrv_co_p{read,write}v_part
handlers.
So, let's do our basic check for the request on vmstate generic
handlers.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210903102807.27127-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/io.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/block/io.c b/block/io.c index 99ee182ca4..58602f84db 100644 --- a/block/io.c +++ b/block/io.c @@ -2810,7 +2810,12 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) { BlockDriver *drv = bs->drv; BlockDriverState *child_bs = bdrv_primary_bs(bs); - int ret = -ENOTSUP; + int ret; + + ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL); + if (ret < 0) { + return ret; + } if (!drv) { return -ENOMEDIUM; @@ -2822,6 +2827,8 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) ret = drv->bdrv_load_vmstate(bs, qiov, pos); } else if (child_bs) { ret = bdrv_co_readv_vmstate(child_bs, qiov, pos); + } else { + ret = -ENOTSUP; } bdrv_dec_in_flight(bs); @@ -2834,7 +2841,12 @@ bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) { BlockDriver *drv = bs->drv; BlockDriverState *child_bs = bdrv_primary_bs(bs); - int ret = -ENOTSUP; + int ret; + + ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL); + if (ret < 0) { + return ret; + } if (!drv) { return -ENOMEDIUM; @@ -2846,6 +2858,8 @@ bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) ret = drv->bdrv_save_vmstate(bs, qiov, pos); } else if (child_bs) { ret = bdrv_co_writev_vmstate(child_bs, qiov, pos); + } else { + ret = -ENOTSUP; } bdrv_dec_in_flight(bs); |