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Diffstat (limited to 'qemu/migration/qemu-file-internal.h')
-rw-r--r-- | qemu/migration/qemu-file-internal.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/qemu/migration/qemu-file-internal.h b/qemu/migration/qemu-file-internal.h new file mode 100644 index 000000000..d95e8538e --- /dev/null +++ b/qemu/migration/qemu-file-internal.h @@ -0,0 +1,53 @@ +/* + * QEMU System Emulator + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * 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. + */ + +#ifndef QEMU_FILE_INTERNAL_H +#define QEMU_FILE_INTERNAL_H 1 + +#include "qemu-common.h" +#include "qemu/iov.h" + +#define IO_BUF_SIZE 32768 +#define MAX_IOV_SIZE MIN(IOV_MAX, 64) + +struct QEMUFile { + const QEMUFileOps *ops; + void *opaque; + + int64_t bytes_xfer; + int64_t xfer_limit; + + int64_t pos; /* start of buffer when writing, end of buffer + when reading */ + int buf_index; + int buf_size; /* 0 when writing */ + uint8_t buf[IO_BUF_SIZE]; + + struct iovec iov[MAX_IOV_SIZE]; + unsigned int iovcnt; + + int last_error; +}; + +#endif |