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usr/include/sys/file.h000064400000003212151705052540010710 0ustar00/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

The GNU C 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; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C 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 the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef	_SYS_FILE_H
#define	_SYS_FILE_H	1

#include <features.h>

#ifndef	_FCNTL_H
# include <fcntl.h>
#endif

__BEGIN_DECLS

/* Alternate names for values for the WHENCE argument to `lseek'.
   These are the same as SEEK_SET, SEEK_CUR, and SEEK_END, respectively.  */
#ifndef L_SET
# define L_SET	0	/* Seek from beginning of file.  */
# define L_INCR	1	/* Seek from current position.  */
# define L_XTND	2	/* Seek from end of file.  */
#endif

/* Operations for the `flock' call.  */
#define	LOCK_SH	1	/* Shared lock.  */
#define	LOCK_EX	2 	/* Exclusive lock.  */
#define	LOCK_UN	8	/* Unlock.  */

/* Can be OR'd in to one of the above.  */
#define	LOCK_NB	4	/* Don't block when locking.  */

/* Apply or remove an advisory lock, according to OPERATION,
   on the file FD refers to.  */
extern int flock (int __fd, int __operation) __THROW;

__END_DECLS

#endif /* sys/file.h  */
usr/include/fstrm/file.h000064400000006216151707052200011227 0ustar00/*
 * Copyright (c) 2014 by Farsight Security, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef FSTRM_FILE_H
#define FSTRM_FILE_H

/**
 * \defgroup fstrm_file fstrm_file
 *
 * `fstrm_file` contains interfaces for opening \ref fstrm_reader or
 * \ref fstrm_writer objects that are backed by file I/O.
 *
 * @{
 */

/**
 * Initialize an `fstrm_file_options` object, which is needed to configure the
 * file path to be opened by fstrm_file_reader_init() or
 * fstrm_file_writer_init().
 *
 * \return
 *	`fstrm_file_options` object.
 */
struct fstrm_file_options *
fstrm_file_options_init(void);

/**
 * Destroy an `fstrm_file_options` object.
 *
 * \param fopt
 *	Pointer to `fstrm_file_options` object.
 */
void
fstrm_file_options_destroy(struct fstrm_file_options **fopt);

/**
 * Set the `file_path` option. This is a filesystem path to a regular file to be
 * opened for reading or writing.
 *
 * \param fopt
 *	`fstrm_file_options` object.
 * \param file_path
 *	The filesystem path for a regular file.
 */
void
fstrm_file_options_set_file_path(struct fstrm_file_options *fopt,
				 const char *file_path);

/**
 * Open a file containing Frame Streams data for reading.
 *
 * \param fopt
 *	`fstrm_file_options` object. Must be non-NULL, and have the `file_path`
 *	option set.
 * \param ropt
 *	`fstrm_reader_options` object. May be NULL, in which case default values
 *	will be used.
 *
 * \return
 *	`fstrm_reader` object.
 * \retval
 *	NULL on failure.
 */
struct fstrm_reader *
fstrm_file_reader_init(const struct fstrm_file_options *fopt,
		       const struct fstrm_reader_options *ropt);

/**
 * Open a file for writing Frame Streams data. The file will be truncated if it
 * already exists.
 *
 * \param fopt
 *	`fstrm_file_options` object. Must be non-NULL, and have the `file_path`
 *	option set.
 * \param wopt
 *	`fstrm_writer_options` object. May be NULL, in which case default values
 *	will be used.
 *
 * \return
 *	`fstrm_writer` object.
 * \retval
 *	NULL on failure.
 */
struct fstrm_writer *
fstrm_file_writer_init(const struct fstrm_file_options *fopt,
		       const struct fstrm_writer_options *wopt);

/**@}*/

#endif /* FSTRM_FILE_H */

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