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
|
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#undef _POSIX_PTHREADS
#include <syscall.h>
#include "../dirstream.h"
#ifdef __SVR4_I386_ABI_L1__
#define close __libc_close
#else
static inline
_syscall1(int,close,int,fd)
#endif
int closedir(DIR * dir)
{
int fd;
if (!dir) {
errno = EBADF;
return -1;
}
pthread_mutex_lock (dir->dd_lock);
/* We need to check dd_fd. */
if (dir->dd_fd == -1)
{
errno = EBADF;
return -1;
}
fd = dir->dd_fd;
dir->dd_fd = -1;
free(dir->dd_buf);
/* Other threads may wake up. */
__pthread_mutex_free (dir->dd_lock);
free(dir);
return close(fd);
}
DIR *
opendir(const char * name)
{
DIR *ptr;
ptr = __libc_opendir (name);
if (ptr)
ptr->dd_lock = __pthread_mutex_malloc (0);
return ptr;
}
struct dirent *
readdir(DIR * dir)
{
struct dirent *de;
if (!dir) {
errno = EBADF;
return NULL;
}
pthread_mutex_lock (dir->dd_lock);
de = __libc_readdir (dir);
pthread_mutex_unlock (dir->dd_lock);
return de;
}
int
readdir_r (DIR * dir, struct dirent * entry, struct dirent ** ret)
{
int result;
if (!dir || !entry || !ret || !*ret) {
return EBADF;
}
pthread_mutex_lock (dir->dd_lock);
result = __libc_readdir_r (dir, entry, ret);
pthread_mutex_unlock (dir->dd_lock);
return result;
}
void
rewinddir(DIR * dir)
{
if (!dir) {
errno = EBADF;
return;
}
pthread_mutex_lock (dir->dd_lock);
__libc_rewinddir (dir);
pthread_mutex_unlock (dir->dd_lock);
}
#include "../dirstream.h"
void
seekdir(DIR * dir, off_t offset)
{
if (!dir) {
errno = EBADF;
return;
}
pthread_mutex_lock (dir->dd_lock);
__libc_seekdir (dir, offset);
pthread_mutex_unlock (dir->dd_lock);
}
off_t
telldir(DIR * dir)
{
off_t offset;
if (!dir) {
errno = EBADF;
return -1;
}
pthread_mutex_lock (dir->dd_lock);
offset = __libc_telldir (dir);
pthread_mutex_unlock (dir->dd_lock);
return offset;
}
|
