diff options
Diffstat (limited to 'migration/qemu-file-channel.c')
| -rw-r--r-- | migration/qemu-file-channel.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c deleted file mode 100644 index bb5a5752df..0000000000 --- a/migration/qemu-file-channel.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * QEMUFile backend for QIOChannel objects - * - * Copyright (c) 2015-2016 Red Hat, Inc - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" -#include "qemu-file-channel.h" -#include "qemu-file.h" -#include "io/channel-socket.h" -#include "io/channel-tls.h" -#include "qemu/iov.h" -#include "qemu/yank.h" -#include "yank_functions.h" - - -static ssize_t channel_writev_buffer(void *opaque, - struct iovec *iov, - int iovcnt, - int64_t pos, - Error **errp) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - ssize_t done = 0; - struct iovec *local_iov = g_new(struct iovec, iovcnt); - struct iovec *local_iov_head = local_iov; - unsigned int nlocal_iov = iovcnt; - - nlocal_iov = iov_copy(local_iov, nlocal_iov, - iov, iovcnt, - 0, iov_size(iov, iovcnt)); - - while (nlocal_iov > 0) { - ssize_t len; - len = qio_channel_writev(ioc, local_iov, nlocal_iov, errp); - if (len == QIO_CHANNEL_ERR_BLOCK) { - if (qemu_in_coroutine()) { - qio_channel_yield(ioc, G_IO_OUT); - } else { - qio_channel_wait(ioc, G_IO_OUT); - } - continue; - } - if (len < 0) { - done = -EIO; - goto cleanup; - } - - iov_discard_front(&local_iov, &nlocal_iov, len); - done += len; - } - - cleanup: - g_free(local_iov_head); - return done; -} - - -static ssize_t channel_get_buffer(void *opaque, - uint8_t *buf, - int64_t pos, - size_t size, - Error **errp) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - ssize_t ret; - - do { - ret = qio_channel_read(ioc, (char *)buf, size, errp); - if (ret < 0) { - if (ret == QIO_CHANNEL_ERR_BLOCK) { - if (qemu_in_coroutine()) { - qio_channel_yield(ioc, G_IO_IN); - } else { - qio_channel_wait(ioc, G_IO_IN); - } - } else { - return -EIO; - } - } - } while (ret == QIO_CHANNEL_ERR_BLOCK); - - return ret; -} - - -static int channel_close(void *opaque, Error **errp) -{ - int ret; - QIOChannel *ioc = QIO_CHANNEL(opaque); - ret = qio_channel_close(ioc, errp); - object_unref(OBJECT(ioc)); - return ret; -} - - -static int channel_shutdown(void *opaque, - bool rd, - bool wr, - Error **errp) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - - if (qio_channel_has_feature(ioc, - QIO_CHANNEL_FEATURE_SHUTDOWN)) { - QIOChannelShutdown mode; - if (rd && wr) { - mode = QIO_CHANNEL_SHUTDOWN_BOTH; - } else if (rd) { - mode = QIO_CHANNEL_SHUTDOWN_READ; - } else { - mode = QIO_CHANNEL_SHUTDOWN_WRITE; - } - if (qio_channel_shutdown(ioc, mode, errp) < 0) { - return -EIO; - } - } - return 0; -} - - -static int channel_set_blocking(void *opaque, - bool enabled, - Error **errp) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - - if (qio_channel_set_blocking(ioc, enabled, errp) < 0) { - return -1; - } - return 0; -} - -static QEMUFile *channel_get_input_return_path(void *opaque) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - - return qemu_fopen_channel_output(ioc); -} - -static QEMUFile *channel_get_output_return_path(void *opaque) -{ - QIOChannel *ioc = QIO_CHANNEL(opaque); - - return qemu_fopen_channel_input(ioc); -} - -static const QEMUFileOps channel_input_ops = { - .get_buffer = channel_get_buffer, - .close = channel_close, - .shut_down = channel_shutdown, - .set_blocking = channel_set_blocking, - .get_return_path = channel_get_input_return_path, -}; - - -static const QEMUFileOps channel_output_ops = { - .writev_buffer = channel_writev_buffer, - .close = channel_close, - .shut_down = channel_shutdown, - .set_blocking = channel_set_blocking, - .get_return_path = channel_get_output_return_path, -}; - - -QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc) -{ - object_ref(OBJECT(ioc)); - return qemu_fopen_ops(ioc, &channel_input_ops, true); -} - -QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc) -{ - object_ref(OBJECT(ioc)); - return qemu_fopen_ops(ioc, &channel_output_ops, true); -} |