[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 <sys/types.h>

#ifdef __linux__

extern 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)

#elif (defined(__FreeBSD__) || defined(__CYGWIN__))

#include <errno.h>

typedef long long off64_t;
#ifdef __FreeBSD__
typedef off64_t loff_t;
#endif


/*
 * 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

/*
 * 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

#define POSIX_FADV_DONTNEED 0

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

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;
}

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

#else
#error "Please add support for your OS."
#endif /* __linux__ , __FreeBSD__, __CYGWIN__ */

#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 <sys/types.h>
	23
	24	#ifdef __linux__
	25
	26	extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
	27	unsigned int flags);
	28	#define lttng_sync_file_range(fd, offset, nbytes, flags) \
	29	compat_sync_file_range(fd, offset, nbytes, flags)
	30
	31	#elif (defined(__FreeBSD__) \|\| defined(__CYGWIN__))
	32
	33	#include <errno.h>
	34
	35	typedef long long off64_t;
	36	#ifdef __FreeBSD__
	37	typedef off64_t loff_t;
	38	#endif
	39
	40
	41	/*
	42	* Possible flags under Linux. Simply nullify them and avoid wrapper.
	43	*/
	44	#define SYNC_FILE_RANGE_WAIT_AFTER 0
	45	#define SYNC_FILE_RANGE_WAIT_BEFORE 0
	46	#define SYNC_FILE_RANGE_WRITE 0
	47
	48	/*
	49	* Possible flags under Linux. Simply nullify them and avoid wrappers.
	50	*/
	51	#define SPLICE_F_MOVE 0
	52	#define SPLICE_F_NONBLOCK 0
	53	#define SPLICE_F_MORE 0
	54	#define SPLICE_F_GIFT 0
	55
	56	#define POSIX_FADV_DONTNEED 0
	57
	58	static inline int lttng_sync_file_range(int fd, off64_t offset,
	59	off64_t nbytes, unsigned int flags)
	60	{
	61	return -ENOSYS;
	62	}
	63
	64	static inline ssize_t splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out,
	65	size_t len, unsigned int flags)
	66	{
	67	return -ENOSYS;
	68	}
	69
	70	static inline int posix_fadvise(int fd, off_t offset, off_t len, int advice)
	71	{
	72	return -ENOSYS;
	73	}
	74
	75	#else
	76	#error "Please add support for your OS."
	77	#endif /* __linux__ , __FreeBSD__, __CYGWIN__ */
	78
	79	#endif /* _COMPAT_FCNTL_H */