[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 <errno.h>
#include <sys/types.h>

#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__ */

#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 <errno.h>
	13	#include <sys/types.h>
	14
	15	#if (defined(__CYGWIN__))
	16	typedef long long off64_t;
	17	#endif
	18
	19	#if (defined(__FreeBSD__) \|\| defined(__sun__))
	20	typedef off64_t loff_t;
	21	#endif
	22
	23	#ifdef __linux__
	24	extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
	25	unsigned int flags);
	26	#define lttng_sync_file_range(fd, offset, nbytes, flags) \
	27	compat_sync_file_range(fd, offset, nbytes, flags)
	28
	29	#endif /* __linux__ */
	30
	31	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	32	/*
	33	* Possible flags under Linux. Simply nullify them and avoid wrapper.
	34	*/
	35	#define SYNC_FILE_RANGE_WAIT_AFTER 0
	36	#define SYNC_FILE_RANGE_WAIT_BEFORE 0
	37	#define SYNC_FILE_RANGE_WRITE 0
	38
	39	static inline int lttng_sync_file_range(int fd, off64_t offset,
	40	off64_t nbytes, unsigned int flags)
	41	{
	42	return -ENOSYS;
	43	}
	44	#endif
	45
	46	#if (defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__))
	47	/*
	48	* Possible flags under Linux. Simply nullify them and avoid wrappers.
	49	*/
	50	#define SPLICE_F_MOVE 0
	51	#define SPLICE_F_NONBLOCK 0
	52	#define SPLICE_F_MORE 0
	53	#define SPLICE_F_GIFT 0
	54
	55	static inline ssize_t splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out,
	56	size_t len, unsigned int flags)
	57	{
	58	return -ENOSYS;
	59	}
	60	#endif
	61
	62	#if !(defined(__linux__) \|\| defined(__FreeBSD__) \|\| defined(__CYGWIN__) \|\| defined(__sun__) \|\| defined(__APPLE__))
	63	#error "Please add support for your OS."
	64	#endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
	65
	66	#endif /* _COMPAT_FCNTL_H */