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/*
* include/common/splice.h
* Splice definition for older Linux libc.
*
* Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _COMMON_SPLICE_H
#define _COMMON_SPLICE_H
#if defined (__linux__) && defined(CONFIG_HAP_LINUX_SPLICE)
#include <errno.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <common/syscall.h>
/* On recent Linux kernels, the splice() syscall may be used for faster data copy.
* But it's not always defined on some OS versions, and it even happens that some
* definitions are wrong with some glibc due to an offset bug in syscall().
*/
#ifndef SPLICE_F_MOVE
#define SPLICE_F_MOVE 0x1
#endif
#ifndef SPLICE_F_NONBLOCK
#define SPLICE_F_NONBLOCK 0x2
#endif
#ifndef SPLICE_F_MORE
#define SPLICE_F_MORE 0x4
#endif
#if defined(USE_MY_SPLICE)
#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
/* The syscall is redefined somewhere else */
extern int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, size_t len, unsigned long flags);
#else
/* We'll define a syscall, so for this we need __NR_splice. It should have
* been provided by syscall.h.
*/
#ifndef __NR_splice
#warning unsupported architecture, guessing __NR_splice=313 like x86...
#define __NR_splice 313
#endif /* __NR_splice */
static inline _syscall6(int, splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned long, flags);
#endif /* VSYSCALL */
#else
/* use the system's definition */
#include <fcntl.h>
#endif /* USE_MY_SPLICE */
#endif /* __linux__ && CONFIG_HAP_LINUX_SPLICE */
#endif /* _COMMON_SPLICE_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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