mirror of
https://passt.top/passt
synced 2024-07-04 08:52:40 +00:00
2a6f8bcca7
Introduce functions to copy to/from a buffer from/to an iovec array, to compute data length in in bytes of an iovec and to copy memory from an iovec to another. iov_from_buf(), iov_to_buf(), iov_size(), iov_copy(). Signed-off-by: Laurent Vivier <lvivier@redhat.com> Message-ID: <20240217150725.661467-2-lvivier@redhat.com> [dwg: Small changes to suppress cppcheck warnings] Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
30 lines
876 B
C
30 lines
876 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* iov.c - helpers for using (partial) iovecs.
|
|
*
|
|
* Copyrigh Red Hat
|
|
* Author: Laurent Vivier <lvivier@redhat.com>
|
|
*
|
|
* This file also contains code originally from QEMU include/qemu/iov.h:
|
|
*
|
|
* Author(s):
|
|
* Amit Shah <amit.shah@redhat.com>
|
|
* Michael Tokarev <mjt@tls.msk.ru>
|
|
*/
|
|
|
|
#ifndef IOVEC_H
|
|
#define IOVEC_H
|
|
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
size_t iov_from_buf(const struct iovec *iov, size_t iov_cnt,
|
|
size_t offset, const void *buf, size_t bytes);
|
|
size_t iov_to_buf(const struct iovec *iov, size_t iov_cnt,
|
|
size_t offset, void *buf, size_t bytes);
|
|
size_t iov_size(const struct iovec *iov, size_t iov_cnt);
|
|
unsigned iov_copy(struct iovec *dst_iov, size_t dst_iov_cnt,
|
|
const struct iovec *iov, size_t iov_cnt,
|
|
size_t offset, size_t bytes);
|
|
#endif /* IOVEC_H */
|