blob: 8db70b284242db6d3f648bd405e5b84391b235c1 (
plain) (
blame)
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
|
/* Copyright (C) 1993-2017 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 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <not-cancel.h>
#include "dirstream.h"
/* Open a directory stream on a file descriptor in Hurd internal form.
We do no checking here on the descriptor. */
DIR *
_hurd_fd_opendir (struct hurd_fd *d)
{
DIR *dirp;
if (d == NULL)
{
errno = EBADF;
return NULL;
}
dirp = (DIR *) malloc (sizeof (DIR));
if (dirp == NULL)
return NULL;
/* Set the descriptor to close on exec. */
HURD_CRITICAL_BEGIN;
__spin_lock (&d->port.lock);
d->flags |= FD_CLOEXEC;
__spin_unlock (&d->port.lock);
HURD_CRITICAL_END;
dirp->__fd = d;
dirp->__data = dirp->__ptr = NULL;
dirp->__entry_data = dirp->__entry_ptr = 0;
dirp->__allocation = 0;
dirp->__size = 0;
__libc_lock_init (dirp->__lock);
return dirp;
}
DIR *
internal_function
__opendirat (int dfd, const char *name)
{
if (name[0] == '\0')
{
/* POSIX.1-1990 says an empty name gets ENOENT;
but `open' might like it fine. */
__set_errno (ENOENT);
return NULL;
}
int flags = O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_CLOEXEC;
int fd;
#if IS_IN (rtld)
assert (dfd == AT_FDCWD);
fd = __open_nocancel (name, flags);
#else
fd = openat_not_cancel_3 (dfd, name, flags);
#endif
if (fd < 0)
return NULL;
/* Extract the pointer to the descriptor structure. */
DIR *dirp = _hurd_fd_opendir (_hurd_fd_get (fd));
if (dirp == NULL)
__close (fd);
return dirp;
}
/* Open a directory stream on NAME. */
DIR *
__opendir (const char *name)
{
#if 0 /* TODO. */
return __opendirat (AT_FDCWD, name);
#else
if (name[0] == '\0')
{
/* POSIX.1-1990 says an empty name gets ENOENT;
but `open' might like it fine. */
__set_errno (ENOENT);
return NULL;
}
int fd = __open (name, O_RDONLY | O_NONBLOCK | O_DIRECTORY);
if (fd < 0)
return NULL;
/* Extract the pointer to the descriptor structure. */
DIR *dirp = _hurd_fd_opendir (_hurd_fd_get (fd));
if (dirp == NULL)
__close (fd);
return dirp;
#endif
}
weak_alias (__opendir, opendir)
|
