/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1989, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _DIRENT_H_
#define _DIRENT_H_

/*
 * The kernel defines the format of directory entries returned by
 * the getdirentries(2) system call.
 */
#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/dirent.h>

#if __BSD_VISIBLE

#ifndef _SIZE_T_DECLARED
typedef __size_t        size_t;
#define _SIZE_T_DECLARED
#endif

#ifndef _SSIZE_T_DECLARED
typedef __ssize_t       ssize_t;
#define _SSIZE_T_DECLARED
#endif

#ifndef _OFF_T_DECLARED
typedef __off_t         off_t;
#define _OFF_T_DECLARED
#endif

#endif /* __BSD_VISIBLE */

#if __XSI_VISIBLE

#ifndef _INO_T_DECLARED
typedef __ino_t         ino_t;
#define _INO_T_DECLARED
#endif

/*
 * XXX this is probably illegal in the __XSI_VISIBLE case, but brings us closer
 * to the specification.
 */
#define d_ino           d_fileno        /* backward and XSI compatibility */

#endif /* __XSI_VISIBLE */

#if __BSD_VISIBLE

#include <sys/_null.h>

/* definitions for library routines operating on directories. */
#define DIRBLKSIZ       1024

struct _dirdesc;
typedef struct _dirdesc DIR;

/* flags for opendir2 */
#define DTF_HIDEW       0x0001  /* hide whiteout entries */
#define DTF_NODUP       0x0002  /* don't return duplicate names */
#define DTF_REWIND      0x0004  /* rewind after reading union stack */
#define __DTF_READALL   0x0008  /* everything has been read */
#define __DTF_SKIPREAD  0x0010  /* assume internal buffer is populated */

#else /* !__BSD_VISIBLE */

typedef void *  DIR;

#endif /* __BSD_VISIBLE */

#ifndef _KERNEL

__BEGIN_DECLS
#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
int      alphasort(const struct dirent **, const struct dirent **);
int      dirfd(DIR *);
#endif
#if __BSD_VISIBLE
int      versionsort(const struct dirent **, const struct dirent **);
DIR     *__opendir2(const char *, int);
int      fdclosedir(DIR *);
ssize_t  getdents(int, char *, size_t);
ssize_t  getdirentries(int, char *, size_t, off_t *);
#endif
DIR     *opendir(const char *);
DIR     *fdopendir(int);
struct dirent *
         readdir(DIR *);
#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
int      readdir_r(DIR *, struct dirent *, struct dirent **)
        __deprecated1("Does not take variable {NAME_MAX} into account");
#endif
void     rewinddir(DIR *);
#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
int      scandir(const char *, struct dirent ***,
            int (*)(const struct dirent *), int (*)(const struct dirent **,
            const struct dirent **));
#ifdef __BLOCKS__
int      scandir_b(const char *, struct dirent ***,
            int (^)(const struct dirent *),
            int (^)(const struct dirent **, const struct dirent **));
#endif
#endif
#if __BSD_VISIBLE
int      fdscandir(int, struct dirent ***,
            int (*)(const struct dirent *), int (*)(const struct dirent **,
            const struct dirent **));
#ifdef __BLOCKS__
int      fdscandir_b(int, struct dirent ***,
            int (^)(const struct dirent *),
            int (^)(const struct dirent **, const struct dirent **));
#endif
int      scandirat(int, const char *, struct dirent ***,
            int (*)(const struct dirent *), int (*)(const struct dirent **,
            const struct dirent **));
#ifdef __BLOCKS__
int      scandirat_b(int, const char *, struct dirent ***,
            int (^)(const struct dirent *),
            int (^)(const struct dirent **, const struct dirent **));
#endif
#endif
#if __XSI_VISIBLE
void     seekdir(DIR *, long);
long     telldir(DIR *);
#endif
int      closedir(DIR *);
__END_DECLS

#endif /* !_KERNEL */

#endif /* !_DIRENT_H_ */