xref: /freebsd/include/dirent.h (revision e796cc77c586c2955b2f3940dbf4991b31e8d289)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1989, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  *	@(#)dirent.h	8.2 (Berkeley) 7/28/94
32  * $FreeBSD$
33  */
34 
35 #ifndef _DIRENT_H_
36 #define _DIRENT_H_
37 
38 /*
39  * The kernel defines the format of directory entries returned by
40  * the getdirentries(2) system call.
41  */
42 #include <sys/cdefs.h>
43 #include <sys/_types.h>
44 #include <sys/dirent.h>
45 
46 #if __BSD_VISIBLE
47 
48 #ifndef _SIZE_T_DECLARED
49 typedef	__size_t	size_t;
50 #define	_SIZE_T_DECLARED
51 #endif
52 
53 #ifndef _SSIZE_T_DECLARED
54 typedef	__ssize_t	ssize_t;
55 #define	_SSIZE_T_DECLARED
56 #endif
57 
58 #ifndef _OFF_T_DECLARED
59 typedef	__off_t		off_t;
60 #define	_OFF_T_DECLARED
61 #endif
62 
63 #endif /* __BSD_VISIBLE */
64 
65 #if __XSI_VISIBLE
66 
67 #ifndef _INO_T_DECLARED
68 typedef	__ino_t		ino_t;
69 #define	_INO_T_DECLARED
70 #endif
71 
72 /*
73  * XXX this is probably illegal in the __XSI_VISIBLE case, but brings us closer
74  * to the specification.
75  */
76 #define	d_ino		d_fileno	/* backward and XSI compatibility */
77 
78 #endif /* __XSI_VISIBLE */
79 
80 #if __BSD_VISIBLE
81 
82 #include <sys/_null.h>
83 
84 /* definitions for library routines operating on directories. */
85 #define	DIRBLKSIZ	1024
86 
87 struct _dirdesc;
88 typedef struct _dirdesc DIR;
89 
90 /* flags for opendir2 */
91 #define DTF_HIDEW	0x0001	/* hide whiteout entries */
92 #define DTF_NODUP	0x0002	/* don't return duplicate names */
93 #define DTF_REWIND	0x0004	/* rewind after reading union stack */
94 #define __DTF_READALL	0x0008	/* everything has been read */
95 #define	__DTF_SKIPREAD	0x0010  /* assume internal buffer is populated */
96 
97 #else /* !__BSD_VISIBLE */
98 
99 typedef	void *	DIR;
100 
101 #endif /* __BSD_VISIBLE */
102 
103 #ifndef _KERNEL
104 
105 __BEGIN_DECLS
106 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
107 int	 alphasort(const struct dirent **, const struct dirent **);
108 int	 dirfd(DIR *);
109 #endif
110 #if __BSD_VISIBLE
111 DIR	*__opendir2(const char *, int);
112 int	 fdclosedir(DIR *);
113 ssize_t	 getdents(int, char *, size_t);
114 ssize_t	 getdirentries(int, char *, size_t, off_t *);
115 #endif
116 DIR	*opendir(const char *);
117 DIR	*fdopendir(int);
118 struct dirent *
119 	 readdir(DIR *);
120 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
121 int	 readdir_r(DIR *, struct dirent *, struct dirent **);
122 #endif
123 void	 rewinddir(DIR *);
124 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
125 int	 scandir(const char *, struct dirent ***,
126 	    int (*)(const struct dirent *), int (*)(const struct dirent **,
127 	    const struct dirent **));
128 #ifdef __BLOCKS__
129 int	 scandir_b(const char *, struct dirent ***,
130 	    int (^)(const struct dirent *),
131 	    int (^)(const struct dirent **, const struct dirent **));
132 #endif
133 #endif
134 #if __XSI_VISIBLE
135 void	 seekdir(DIR *, long);
136 long	 telldir(DIR *);
137 #endif
138 int	 closedir(DIR *);
139 __END_DECLS
140 
141 #endif /* !_KERNEL */
142 
143 #endif /* !_DIRENT_H_ */
144