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
|
/* Copyright (C) 1992-1998, 2000 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifndef SCANDIR
#define SCANDIR scandir
#define READDIR __readdir
#define DIRENT_TYPE struct dirent
#endif
int
SCANDIR (dir, namelist, select, cmp)
const char *dir;
DIRENT_TYPE ***namelist;
int (*select) (const DIRENT_TYPE *);
int (*cmp) (const void *, const void *);
{
DIR *dp = __opendir (dir);
DIRENT_TYPE **v = NULL;
size_t vsize = 0, i;
DIRENT_TYPE *d;
int save;
if (dp == NULL)
return -1;
save = errno;
__set_errno (0);
i = 0;
while ((d = READDIR (dp)) != NULL)
if (select == NULL || (*select) (d))
{
DIRENT_TYPE *vnew;
size_t dsize;
/* Ignore errors from select or readdir */
__set_errno (0);
if (__builtin_expect (i == vsize, 0))
{
DIRENT_TYPE **new;
if (vsize == 0)
vsize = 10;
else
vsize *= 2;
new = (DIRENT_TYPE **) realloc (v, vsize * sizeof (*v));
if (new == NULL)
break;
v = new;
}
dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
vnew = (DIRENT_TYPE *) malloc (dsize);
if (vnew == NULL)
break;
v[i++] = (DIRENT_TYPE *) memcpy (vnew, d, dsize);
}
if (__builtin_expect (errno, 0) != 0)
{
save = errno;
(void) __closedir (dp);
while (i > 0)
free (v[--i]);
free (v);
__set_errno (save);
return -1;
}
(void) __closedir (dp);
__set_errno (save);
/* Sort the list if we have a comparison function to sort with. */
if (cmp != NULL)
qsort (v, i, sizeof (*v), cmp);
*namelist = v;
return i;
}
|
