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
|
/* Copyright (C) 2000-2020 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
<https://www.gnu.org/licenses/>. */
#define scandir __no_scandir_decl
#include <dirent.h>
#undef scandir
int
__scandir64 (const char *dir, struct dirent64 ***namelist,
int (*select) (const struct dirent64 *),
int (*cmp) (const struct dirent64 **, const struct dirent64 **))
{
return __scandir64_tail (__opendir (dir), namelist, select, cmp);
}
#if _DIRENT_MATCHES_DIRENT64
weak_alias (__scandir64, scandir64)
weak_alias (__scandir64, scandir)
#else
# include <shlib-compat.h>
versioned_symbol (libc, __scandir64, scandir64, GLIBC_2_2);
# if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)
# include <string.h>
# include <errno.h>
# include "olddirent.h"
int
__old_scandir64 (const char *dir, struct __old_dirent64 ***namelist,
int (*select) (const struct __old_dirent64 *),
int (*cmp) (const struct __old_dirent64 **,
const struct __old_dirent64 **))
{
DIR *dp = __opendir (dir);
struct __old_dirent64 **v = NULL;
size_t vsize = 0;
struct scandir_cancel_struct c;
struct __old_dirent64 *d;
int save;
if (dp == NULL)
return -1;
save = errno;
__set_errno (0);
c.dp = dp;
c.v = NULL;
c.cnt = 0;
__libc_cleanup_push (__scandir_cancel_handler, &c);
while ((d = __old_readdir64 (dp)) != NULL)
{
int use_it = select == NULL;
if (! use_it)
{
use_it = select (d);
/* The select function might have changed errno. It was
zero before and it need to be again to make the latter
tests work. */
__set_errno (0);
}
if (use_it)
{
struct __old_dirent64 *vnew;
size_t dsize;
/* Ignore errors from select or readdir */
__set_errno (0);
if (__glibc_unlikely (c.cnt == vsize))
{
struct __old_dirent64 **new;
if (vsize == 0)
vsize = 10;
else
vsize *= 2;
new = (struct __old_dirent64 **) realloc (v,
vsize * sizeof (*v));
if (new == NULL)
break;
v = new;
c.v = (void *) v;
}
dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
vnew = (struct __old_dirent64 *) malloc (dsize);
if (vnew == NULL)
break;
v[c.cnt++] = (struct __old_dirent64 *) memcpy (vnew, d, dsize);
}
}
if (__builtin_expect (errno, 0) != 0)
{
save = errno;
while (c.cnt > 0)
free (v[--c.cnt]);
free (v);
c.cnt = -1;
}
else
{
/* Sort the list if we have a comparison function to sort with. */
if (cmp != NULL)
qsort (v, c.cnt, sizeof (*v),
(int (*) (const void *, const void *)) cmp);
*namelist = v;
}
__libc_cleanup_pop (0);
(void) __closedir (dp);
__set_errno (save);
return c.cnt;
}
compat_symbol (libc, __old_scandir64, scandir64, GLIBC_2_1);
# endif /* SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) */
#endif /* _DIRENT_MATCHES_DIRENT64 */
|
