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virglrenderer/src/vrend_iov.h

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/**************************************************************************
*
* Copyright (C) 2014 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.
*
**************************************************************************/
#ifndef VREND_IOV_H
#define VREND_IOV_H
#include <sys/uio.h>
typedef void (*iov_cb)(void *cookie, unsigned int doff, void *src, int len);
size_t vrend_get_iovec_size(const struct iovec *iov, int iovlen);
size_t vrend_read_from_iovec(const struct iovec *iov, int iov_cnt,
size_t offset, char *buf, size_t bytes);
size_t vrend_write_to_iovec(const struct iovec *iov, int iov_cnt,
size_t offset, const char *buf, size_t bytes);
size_t vrend_read_from_iovec_cb(const struct iovec *iov, int iov_cnt,
size_t offset, size_t bytes, iov_cb iocb, void *cookie);
#endif