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

/*
 * Copyright (C) 2011 David Goulet <dgoulet@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _COMPAT_FCNTL_H
#define _COMPAT_FCNTL_H

#include <fcntl.h>
#include <sys/types.h>

#include <common/compat/errno.h>

#ifdef __cplusplus
extern "C" {
#endif

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

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

#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)

#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

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

#ifdef __cplusplus
}
#endif

#endif /* _COMPAT_FCNTL_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 David Goulet <dgoulet@efficios.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0-only
	5	*
	6	*/
	7
	8	#ifndef _COMPAT_FCNTL_H
	9	#define _COMPAT_FCNTL_H
	10
	11	#include <fcntl.h>
	12	#include <sys/types.h>
	13
	14	#include <common/compat/errno.h>
	15
	16	#ifdef __cplusplus
	17	extern "C" {
	18	#endif
	19
	20	#if (defined(__CYGWIN__))
	21	typedef long long off64_t;
	22	#endif
	23
	24	#if (defined(__FreeBSD__) \|\| defined(__sun__))
	25	typedef off64_t loff_t;
	26	#endif
	27
	28	#ifdef __linux__
	29	extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
	30	unsigned int flags);
	31	#define lttng_sync_file_range(fd, offset, nbytes, flags) \
	32	compat_sync_file_range(fd, offset, nbytes, flags)
	33
	34	#endif /* __linux__ */
	35
	36	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	37	/*
	38	* Possible flags under Linux. Simply nullify them and avoid wrapper.
	39	*/
	40	#define SYNC_FILE_RANGE_WAIT_AFTER 0
	41	#define SYNC_FILE_RANGE_WAIT_BEFORE 0
	42	#define SYNC_FILE_RANGE_WRITE 0
	43
	44	static inline int lttng_sync_file_range(int fd, off64_t offset,
	45	off64_t nbytes, unsigned int flags)
	46	{
	47	return -ENOSYS;
	48	}
	49	#endif
	50
	51	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	52	/*
	53	* Possible flags under Linux. Simply nullify them and avoid wrappers.
	54	*/
	55	#define SPLICE_F_MOVE 0
	56	#define SPLICE_F_NONBLOCK 0
	57	#define SPLICE_F_MORE 0
	58	#define SPLICE_F_GIFT 0
	59
	60	static inline ssize_t splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out,
	61	size_t len, unsigned int flags)
	62	{
	63	return -ENOSYS;
	64	}
	65	#endif
	66
	67	#if !(defined(__linux__) \|\| defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__) \|\| defined(__APPLE__))
	68	#error "Please add support for your OS."
	69	#endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
	70
	71	#ifdef __cplusplus
	72	}
	73	#endif
	74
	75	#endif /* _COMPAT_FCNTL_H */