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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* Start reading the entries of a directory.
Copyright (C) 2006-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <dirent.h>
#include <errno.h>
#include <stddef.h>
#if HAVE_OPENDIR
/* Override opendir(), to keep track of the open file descriptors.
Needed because there is a function dirfd(). */
#else
# include "filename.h"
#endif
#include <stdlib.h>
#include <string.h>
#if GNULIB_defined_DIR
# include "dirent-private.h"
#endif
#if REPLACE_FCHDIR
# include <unistd.h>
#endif
#ifdef __KLIBC__
# include <io.h>
# include <fcntl.h>
#endif
#if defined _WIN32 && ! defined __CYGWIN__
/* Don't assume that UNICODE is not defined. */
# undef WIN32_FIND_DATA
# define WIN32_FIND_DATA WIN32_FIND_DATAA
# undef GetFullPathName
# define GetFullPathName GetFullPathNameA
# undef FindFirstFile
# define FindFirstFile FindFirstFileA
#endif
DIR *
opendir (const char *dir_name)
#undef opendir
{
#if HAVE_DIRENT_H /* equivalent to HAVE_OPENDIR */
DIR *dirp;
# if GNULIB_defined_DIR
# undef DIR
dirp = (struct gl_directory *) malloc (sizeof (struct gl_directory));
if (dirp == NULL)
{
errno = ENOMEM;
return NULL;
}
DIR *real_dirp = opendir (dir_name);
if (real_dirp == NULL)
{
int saved_errno = errno;
free (dirp);
errno = saved_errno;
return NULL;
}
dirp->fd_to_close = -1;
dirp->real_dirp = real_dirp;
# else
dirp = opendir (dir_name);
if (dirp == NULL)
return NULL;
# endif
# ifdef __KLIBC__
{
int fd = open (dir_name, O_RDONLY);
if (fd == -1 || _gl_register_dirp_fd (fd, dirp))
{
int saved_errno = errno;
close (fd);
closedir (dirp);
errno = saved_errno;
return NULL;
}
}
# endif
#else
char dir_name_mask[MAX_PATH + 1 + 1 + 1];
int status;
HANDLE current;
WIN32_FIND_DATA entry;
struct gl_directory *dirp;
if (dir_name[0] == '\0')
{
errno = ENOENT;
return NULL;
}
/* Make the dir_name absolute, so that we continue reading the same
directory if the current directory changed between this opendir()
call and a subsequent rewinddir() call. */
if (!GetFullPathName (dir_name, MAX_PATH, dir_name_mask, NULL))
{
errno = EINVAL;
return NULL;
}
/* Append the mask.
"*" and "*.*" appear to be equivalent. */
{
char *p;
p = dir_name_mask + strlen (dir_name_mask);
if (p > dir_name_mask && !ISSLASH (p[-1]))
*p++ = '\\';
*p++ = '*';
*p = '\0';
}
/* Start searching the directory. */
status = -1;
current = FindFirstFile (dir_name_mask, &entry);
if (current == INVALID_HANDLE_VALUE)
{
switch (GetLastError ())
{
case ERROR_FILE_NOT_FOUND:
status = -2;
break;
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
return NULL;
case ERROR_DIRECTORY:
errno = ENOTDIR;
return NULL;
case ERROR_ACCESS_DENIED:
errno = EACCES;
return NULL;
default:
errno = EIO;
return NULL;
}
}
/* Allocate the result. */
dirp =
(struct gl_directory *)
malloc (offsetof (struct gl_directory, dir_name_mask[0])
+ strlen (dir_name_mask) + 1);
if (dirp == NULL)
{
if (current != INVALID_HANDLE_VALUE)
FindClose (current);
errno = ENOMEM;
return NULL;
}
dirp->fd_to_close = -1;
dirp->status = status;
dirp->current = current;
if (status == -1)
memcpy (&dirp->entry, &entry, sizeof (WIN32_FIND_DATA));
strcpy (dirp->dir_name_mask, dir_name_mask);
#endif
#if REPLACE_FCHDIR
{
int fd = dirfd (dirp);
if (0 <= fd && _gl_register_fd (fd, dir_name) != fd)
{
int saved_errno = errno;
closedir (dirp);
errno = saved_errno;
return NULL;
}
}
#endif
return dirp;
}
|
