diff options
Diffstat (limited to 'nbd/common.c')
| -rw-r--r-- | nbd/common.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/nbd/common.c b/nbd/common.c index dccbb8e..bd81637 100644 --- a/nbd/common.c +++ b/nbd/common.c @@ -20,14 +20,18 @@ #include "qapi/error.h" #include "nbd-internal.h" +/* nbd_wr_syncv + * The function may be called from coroutine or from non-coroutine context. + * When called from non-coroutine context @ioc must be in blocking mode. + */ ssize_t nbd_wr_syncv(QIOChannel *ioc, struct iovec *iov, size_t niov, size_t length, - bool do_read) + bool do_read, + Error **errp) { ssize_t done = 0; - Error *local_err = NULL; struct iovec *local_iov = g_new(struct iovec, niov); struct iovec *local_iov_head = local_iov; unsigned int nlocal_iov = niov; @@ -37,22 +41,17 @@ ssize_t nbd_wr_syncv(QIOChannel *ioc, while (nlocal_iov > 0) { ssize_t len; if (do_read) { - len = qio_channel_readv(ioc, local_iov, nlocal_iov, &local_err); + len = qio_channel_readv(ioc, local_iov, nlocal_iov, errp); } else { - len = qio_channel_writev(ioc, local_iov, nlocal_iov, &local_err); + len = qio_channel_writev(ioc, local_iov, nlocal_iov, errp); } if (len == QIO_CHANNEL_ERR_BLOCK) { - if (qemu_in_coroutine()) { - qio_channel_yield(ioc, do_read ? G_IO_IN : G_IO_OUT); - } else { - return -EAGAIN; - } + /* errp should not be set */ + assert(qemu_in_coroutine()); + qio_channel_yield(ioc, do_read ? G_IO_IN : G_IO_OUT); continue; } if (len < 0) { - TRACE("I/O error: %s", error_get_pretty(local_err)); - error_free(local_err); - /* XXX handle Error objects */ done = -EIO; goto cleanup; } |