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1 | /*- |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | * | |
33 | * @(#)dirent.h 5.18 (Berkeley) 2/23/91 | |
34 | */ | |
35 | ||
36 | #ifndef _DIRENT_H_ | |
37 | #define _DIRENT_H_ | |
38 | ||
39 | /* | |
40 | * A directory entry has a struct dirent at the front of it, containing its | |
41 | * inode number, the length of the entry, and the length of the name | |
42 | * contained in the entry. These are followed by the name padded to a 4 | |
43 | * byte boundary with null bytes. All names are guaranteed null terminated. | |
44 | * The maximum length of a name in a directory is MAXNAMLEN. | |
45 | */ | |
46 | ||
47 | struct dirent { | |
48 | u_long d_fileno; /* file number of entry */ | |
49 | u_short d_reclen; /* length of this record */ | |
50 | u_short d_namlen; /* length of string in d_name */ | |
51 | #ifdef _POSIX_SOURCE | |
52 | char d_name[255 + 1]; /* name must be no longer than this */ | |
53 | #else | |
54 | #define MAXNAMLEN 255 | |
55 | char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ | |
56 | #endif | |
57 | }; | |
58 | ||
59 | #ifdef _POSIX_SOURCE | |
60 | typedef void * DIR; | |
61 | #else | |
62 | ||
63 | #define d_ino d_fileno /* backward compatibility */ | |
64 | ||
65 | /* definitions for library routines operating on directories. */ | |
66 | #define DIRBLKSIZ 1024 | |
67 | ||
68 | /* structure describing an open directory. */ | |
69 | typedef struct _dirdesc { | |
70 | int dd_fd; /* file descriptor associated with directory */ | |
71 | long dd_loc; /* offset in current buffer */ | |
72 | long dd_size; /* amount of data returned by getdirentries */ | |
73 | char *dd_buf; /* data buffer */ | |
74 | int dd_len; /* size of data buffer */ | |
75 | long dd_seek; /* magic cookie returned by getdirentries */ | |
76 | } DIR; | |
77 | ||
78 | #define dirfd(dirp) ((dirp)->dd_fd) | |
79 | ||
80 | #ifndef NULL | |
81 | #define NULL 0 | |
82 | #endif | |
83 | ||
84 | #endif /* _POSIX_SOURCE */ | |
85 | ||
86 | #ifndef KERNEL | |
87 | ||
88 | #include <sys/cdefs.h> | |
89 | ||
90 | __BEGIN_DECLS | |
91 | DIR *opendir __P((const char *)); | |
92 | struct dirent *readdir __P((DIR *)); | |
93 | void rewinddir __P((DIR *)); | |
94 | int closedir __P((DIR *)); | |
95 | #ifndef _POSIX_SOURCE | |
96 | long telldir __P((const DIR *)); | |
97 | void seekdir __P((DIR *, long)); | |
98 | int scandir __P((const char *, struct dirent ***, | |
99 | int (*)(struct dirent *), int (*)(const void *, const void *))); | |
100 | int alphasort __P((const void *, const void *)); | |
101 | int getdirentries __P((int, char *, int, long *)); | |
102 | #endif /* not POSIX */ | |
103 | __END_DECLS | |
104 | ||
105 | #endif /* !KERNEL */ | |
106 | ||
107 | #endif /* !_DIRENT_H_ */ |