diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2017-10-12 12:53:07 +0300 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2017-10-12 16:19:35 -0500 |
| commit | 4bfe4478d17679464a2aaa91ed703522ed9af8a0 (patch) | |
| tree | a0e8b0eff0ed422ed66e999e850b643a34703187 /block | |
| parent | e8d3eb74bf11dff6920b8d0884c28f93e0d0d732 (diff) | |
block/nbd-client: assert qiov len once in nbd_co_request
Also improve the assertion: check that qiov is NULL for other commands
than CMD_READ and CMD_WRITE.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171012095319.136610-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/nbd-client.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/block/nbd-client.c b/block/nbd-client.c index 72651dcdb1..ddf273a6a4 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -156,7 +156,6 @@ static int nbd_co_send_request(BlockDriverState *bs, qio_channel_set_cork(s->ioc, true); rc = nbd_send_request(s->ioc, request); if (rc >= 0 && !s->quit) { - assert(request->len == iov_size(qiov->iov, qiov->niov)); if (qio_channel_writev_all(s->ioc, qiov->iov, qiov->niov, NULL) < 0) { rc = -EIO; @@ -197,7 +196,6 @@ static int nbd_co_receive_reply(NBDClientSession *s, assert(s->reply.handle == request->handle); ret = -s->reply.error; if (qiov && s->reply.error == 0) { - assert(request->len == iov_size(qiov->iov, qiov->niov)); if (qio_channel_readv_all(s->ioc, qiov->iov, qiov->niov, NULL) < 0) { ret = -EIO; @@ -231,8 +229,12 @@ static int nbd_co_request(BlockDriverState *bs, NBDClientSession *client = nbd_get_client_session(bs); int ret; - assert(!qiov || request->type == NBD_CMD_WRITE || - request->type == NBD_CMD_READ); + if (qiov) { + assert(request->type == NBD_CMD_WRITE || request->type == NBD_CMD_READ); + assert(request->len == iov_size(qiov->iov, qiov->niov)); + } else { + assert(request->type != NBD_CMD_WRITE && request->type != NBD_CMD_READ); + } ret = nbd_co_send_request(bs, request, request->type == NBD_CMD_WRITE ? qiov : NULL); if (ret < 0) { |