xref: /freebsd/include/dirent.h (revision 7c43148a974877188a930e4078a164f83da8e652)
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 
32 #ifndef _DIRENT_H_
33 #define _DIRENT_H_
34 
35 /*
36  * The kernel defines the format of directory entries returned by
37  * the getdirentries(2) system call.
38  */
39 #include <sys/cdefs.h>
40 #include <sys/_types.h>
41 #include <sys/dirent.h>
42 
43 #if __BSD_VISIBLE
44 
45 #ifndef _SIZE_T_DECLARED
46 typedef	__size_t	size_t;
47 #define	_SIZE_T_DECLARED
48 #endif
49 
50 #ifndef _SSIZE_T_DECLARED
51 typedef	__ssize_t	ssize_t;
52 #define	_SSIZE_T_DECLARED
53 #endif
54 
55 #ifndef _OFF_T_DECLARED
56 typedef	__off_t		off_t;
57 #define	_OFF_T_DECLARED
58 #endif
59 
60 #endif /* __BSD_VISIBLE */
61 
62 #if __XSI_VISIBLE
63 
64 #ifndef _INO_T_DECLARED
65 typedef	__ino_t		ino_t;
66 #define	_INO_T_DECLARED
67 #endif
68 
69 /*
70  * XXX this is probably illegal in the __XSI_VISIBLE case, but brings us closer
71  * to the specification.
72  */
73 #define	d_ino		d_fileno	/* backward and XSI compatibility */
74 
75 #endif /* __XSI_VISIBLE */
76 
77 #if __BSD_VISIBLE
78 
79 #include <sys/_null.h>
80 
81 /* definitions for library routines operating on directories. */
82 #define	DIRBLKSIZ	1024
83 
84 struct _dirdesc;
85 typedef struct _dirdesc DIR;
86 
87 /* flags for opendir2 */
88 #define DTF_HIDEW	0x0001	/* hide whiteout entries */
89 #define DTF_NODUP	0x0002	/* don't return duplicate names */
90 #define DTF_REWIND	0x0004	/* rewind after reading union stack */
91 #define __DTF_READALL	0x0008	/* everything has been read */
92 #define	__DTF_SKIPREAD	0x0010  /* assume internal buffer is populated */
93 
94 #else /* !__BSD_VISIBLE */
95 
96 typedef	void *	DIR;
97 
98 #endif /* __BSD_VISIBLE */
99 
100 #ifndef _KERNEL
101 
102 __BEGIN_DECLS
103 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
104 int	 alphasort(const struct dirent **, const struct dirent **);
105 int	 dirfd(DIR *);
106 #endif
107 #if __BSD_VISIBLE
108 int	 versionsort(const struct dirent **, const struct dirent **);
109 DIR	*__opendir2(const char *, int);
110 int	 fdclosedir(DIR *);
111 ssize_t	 getdents(int, char *, size_t);
112 ssize_t	 getdirentries(int, char *, size_t, off_t *);
113 #endif
114 DIR	*opendir(const char *);
115 DIR	*fdopendir(int);
116 struct dirent *
117 	 readdir(DIR *);
118 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
119 int	 readdir_r(DIR *, struct dirent *, struct dirent **);
120 #endif
121 void	 rewinddir(DIR *);
122 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE >= 700
123 int	 scandir(const char *, struct dirent ***,
124 	    int (*)(const struct dirent *), int (*)(const struct dirent **,
125 	    const struct dirent **));
126 #ifdef __BLOCKS__
127 int	 scandir_b(const char *, struct dirent ***,
128 	    int (^)(const struct dirent *),
129 	    int (^)(const struct dirent **, const struct dirent **));
130 #endif
131 #endif
132 #if __BSD_VISIBLE
133 int	 scandirat(int, const char *, struct dirent ***,
134 	    int (*)(const struct dirent *), int (*)(const struct dirent **,
135 	    const struct dirent **));
136 #endif
137 #if __XSI_VISIBLE
138 void	 seekdir(DIR *, long);
139 long	 telldir(DIR *);
140 #endif
141 int	 closedir(DIR *);
142 __END_DECLS
143 
144 #endif /* !_KERNEL */
145 
146 #endif /* !_DIRENT_H_ */
147