mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-06-26 18:44:28 -04:00
Alex Rønne Petersen
71 lines
2.6 KiB
C
Vendored
71 lines
2.6 KiB
C
Vendored
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1982, 1986, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _SYS__IOVEC_H_
|
|
#define _SYS__IOVEC_H_
|
|
|
|
#include <sys/_types.h>
|
|
|
|
#ifndef _SIZE_T_DECLARED
|
|
typedef __size_t size_t;
|
|
#define _SIZE_T_DECLARED
|
|
#endif
|
|
|
|
struct iovec {
|
|
void *iov_base; /* Base address. */
|
|
size_t iov_len; /* Length. */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
#define IOVEC_INIT(iovp, base, len) \
|
|
*(iovp) = (struct iovec){ .iov_base = (base), .iov_len = (len) }
|
|
|
|
/* String with length including NUL terminator */
|
|
#define IOVEC_INIT_CSTR(iovp, str) do { \
|
|
void *__str = (str); \
|
|
IOVEC_INIT(iovp, __str, strlen(__str) + 1); \
|
|
} while(0)
|
|
|
|
/* Object with size from sizeof() */
|
|
#define IOVEC_INIT_OBJ(iovp, obj) \
|
|
IOVEC_INIT(iovp, &(obj), sizeof(obj))
|
|
|
|
#define IOVEC_ADVANCE(iovp, amt) do { \
|
|
struct iovec *__iovp = (iovp); \
|
|
size_t __amt = (amt); \
|
|
KASSERT(__amt <= __iovp->iov_len, ("%s: amount %zu > iov_len \
|
|
%zu", __func__, __amt, __iovp->iov_len)); \
|
|
__iovp->iov_len -= __amt; \
|
|
__iovp->iov_base = (char *)__iovp->iov_base + __amt; \
|
|
} while(0)
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS__IOVEC_H_ */ |