struct iocb iocb;
ssize_t ret;
size_t nbytes;
+ QEMUIOVector *qiov;
+ bool is_read;
QLIST_ENTRY(qemu_laiocb) node;
};
ret = laiocb->ret;
if (ret != -ECANCELED) {
- if (ret == laiocb->nbytes)
+ if (ret == laiocb->nbytes) {
ret = 0;
- else if (ret >= 0)
- ret = -EINVAL;
+ } else if (ret >= 0) {
+ /* Short reads mean EOF, pad with zeros. */
+ if (laiocb->is_read) {
+ qemu_iovec_memset_skip(laiocb->qiov, 0,
+ laiocb->qiov->size - ret, ret);
+ } else {
+ ret = -EINVAL;
+ }
+ }
laiocb->common.cb(laiocb->common.opaque, ret);
}
laiocb->nbytes = nb_sectors * 512;
laiocb->ctx = s;
laiocb->ret = -EINPROGRESS;
+ laiocb->is_read = (type == QEMU_AIO_READ);
+ laiocb->qiov = qiov;
iocbs = &laiocb->iocb;
goto out_dec_count;
return &laiocb->common;
-out_free_aiocb:
- qemu_aio_release(laiocb);
out_dec_count:
s->count--;
+out_free_aiocb:
+ qemu_aio_release(laiocb);
return NULL;
}