[lttng-tools.git] / src / common / compat / fcntl.h

/*
 * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef _COMPAT_FCNTL_H
#define _COMPAT_FCNTL_H

#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <common/macros.h>

#if (defined(__FreeBSD__) || defined(__CYGWIN__))
typedef long long off64_t;
#endif

#if (defined(__FreeBSD__) || defined(__sun__))
typedef off64_t loff_t;
#endif

#ifdef __linux__
LTTNG_HIDDEN
int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
		unsigned int flags);
#define lttng_sync_file_range(fd, offset, nbytes, flags) \
	compat_sync_file_range(fd, offset, nbytes, flags)

#endif /* __linux__ */

#if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
/*
 * Possible flags under Linux. Simply nullify them and avoid wrapper.
 */
#define SYNC_FILE_RANGE_WAIT_AFTER    0
#define SYNC_FILE_RANGE_WAIT_BEFORE   0
#define SYNC_FILE_RANGE_WRITE         0

static inline int lttng_sync_file_range(int fd, off64_t offset,
		off64_t nbytes, unsigned int flags)
{
	return -ENOSYS;
}
#endif

#if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
/*
 * Possible flags under Linux. Simply nullify them and avoid wrappers.
 */
#define SPLICE_F_MOVE       0
#define SPLICE_F_NONBLOCK   0
#define SPLICE_F_MORE       0
#define SPLICE_F_GIFT       0

static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
		size_t len, unsigned int flags)
{
	return -ENOSYS;
}
#endif

#ifdef __FreeBSD__
#define POSIX_FADV_DONTNEED 0

static inline int posix_fadvise(int fd, off_t offset, off_t len, int advice)
{
	return -ENOSYS;
}
#endif

#if !(defined(__linux__) || defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__) || defined(__APPLE__))
#error "Please add support for your OS."
#endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */

#endif /* _COMPAT_FCNTL_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License, version 2 only,
	6	* as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#ifndef _COMPAT_FCNTL_H
	19	#define _COMPAT_FCNTL_H
	20
	21	#include <fcntl.h>
	22	#include <errno.h>
	23	#include <sys/types.h>
	24	#include <common/macros.h>
	25
	26	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__))
	27	typedef long long off64_t;
	28	#endif
	29
	30	#if (defined(__FreeBSD__) \|\| defined(__sun__))
	31	typedef off64_t loff_t;
	32	#endif
	33
	34	#ifdef __linux__
	35	LTTNG_HIDDEN
	36	int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
	37	unsigned int flags);
	38	#define lttng_sync_file_range(fd, offset, nbytes, flags) \
	39	compat_sync_file_range(fd, offset, nbytes, flags)
	40
	41	#endif /* __linux__ */
	42
	43	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	44	/*
	45	* Possible flags under Linux. Simply nullify them and avoid wrapper.
	46	*/
	47	#define SYNC_FILE_RANGE_WAIT_AFTER 0
	48	#define SYNC_FILE_RANGE_WAIT_BEFORE 0
	49	#define SYNC_FILE_RANGE_WRITE 0
	50
	51	static inline int lttng_sync_file_range(int fd, off64_t offset,
	52	off64_t nbytes, unsigned int flags)
	53	{
	54	return -ENOSYS;
	55	}
	56	#endif
	57
	58	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	59	/*
	60	* Possible flags under Linux. Simply nullify them and avoid wrappers.
	61	*/
	62	#define SPLICE_F_MOVE 0
	63	#define SPLICE_F_NONBLOCK 0
	64	#define SPLICE_F_MORE 0
	65	#define SPLICE_F_GIFT 0
	66
	67	static inline ssize_t splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out,
	68	size_t len, unsigned int flags)
	69	{
	70	return -ENOSYS;
	71	}
	72	#endif
	73
	74	#ifdef __FreeBSD__
	75	#define POSIX_FADV_DONTNEED 0
	76
	77	static inline int posix_fadvise(int fd, off_t offset, off_t len, int advice)
	78	{
	79	return -ENOSYS;
	80	}
	81	#endif
	82
	83	#if !(defined(__linux__) \|\| defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__) \|\| defined(__APPLE__))
	84	#error "Please add support for your OS."
	85	#endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
	86
	87	#endif /* _COMPAT_FCNTL_H */