1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* Copyright (C) 1991, 1992 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
* POSIX Standard: 5.1.2 Directory Operations <dirent.h>
*/
#ifndef _DIRSTREAM_H
#define _DIRSTREAM_H 1
#include <dirent.h>
#ifdef _POSIX_THREADS
#include <pthread.h>
#endif
/* For now, syscall readdir () only supports one entry at a time. It
* will be changed in the future.
#define NUMENT 3
*/
#ifndef NUMENT
#define NUMENT 1
#endif
#define SINGLE_READDIR 11
#define MULTI_READDIR 12
#define NEW_READDIR 13
/* Directory stream type. */
struct DIR {
/* file descriptor */
int dd_fd;
/* offset of the next dir entry in buffer */
off_t dd_nextloc;
/* bytes of valid entries in buffer */
size_t dd_size;
/* -> directory buffer */
struct dirent *dd_buf;
/* offset of the next dir entry in directory. */
off_t dd_nextoff;
/* total size of buffer */
size_t dd_max;
enum {unknown, have_getdents, no_getdents} dd_getdents;
/* lock */
#ifdef _POSIX_THREADS
pthread_mutex_t *dd_lock;
#else
void *dd_lock;
#endif
}; /* stream data from opendir() */
#ifdef __ELF__
extern DIR *__libc_opendir __P ((__const char *__name));
extern int __libc_closedir __P ((DIR * __dirp));
extern struct dirent *__libc_readdir __P ((DIR * __dirp));
extern void __libc_rewinddir __P ((DIR * __dirp));
extern void __libc_seekdir __P ((DIR * __dirp, __off_t __pos));
extern __off_t __libc_telldir __P ((DIR * __dirp));
extern int __libc_readdir_r __P((DIR *__dirp, struct dirent *__entry,
struct dirent **__result));
#else
#define __libc_opendir opendir
#define __libc_closedir closedir
#define __libc_rewinddir rewinddir
#define __libc_seekdir seekdir
#define __libc_telldir telldir
#define __libc_readdir readdir
#define __libc_readdir_r readdir_r
#endif
#endif /* dirent.h */
|
