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bcaad6ee | 1 | /* Copyright (C) 1992,93,94,95,96,97,98,2000 Free Software Foundation, Inc. |
89a9e37b UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | #include <dirent.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <errno.h> | |
23 | ||
24 | int | |
25 | scandir64 (dir, namelist, select, cmp) | |
26 | const char *dir; | |
27 | struct dirent64 ***namelist; | |
bcaad6ee AJ |
28 | int (*select) (const struct dirent64 *); |
29 | int (*cmp) (const void *, const void *); | |
89a9e37b | 30 | { |
50304ef0 | 31 | DIR *dp = __opendir (dir); |
89a9e37b UD |
32 | struct dirent64 **v = NULL; |
33 | size_t vsize = 0, i; | |
34 | struct dirent64 *d; | |
35 | int save; | |
36 | ||
37 | if (dp == NULL) | |
38 | return -1; | |
39 | ||
40 | save = errno; | |
41 | __set_errno (0); | |
42 | ||
43 | i = 0; | |
44 | while ((d = __readdir64 (dp)) != NULL) | |
45 | if (select == NULL || (*select) (d)) | |
46 | { | |
47 | struct dirent64 *vnew; | |
48 | size_t dsize; | |
49 | ||
50 | /* Ignore errors from select or readdir */ | |
51 | __set_errno (0); | |
52 | ||
53 | if (i == vsize) | |
54 | { | |
55 | struct dirent64 **new; | |
56 | if (vsize == 0) | |
57 | vsize = 10; | |
58 | else | |
59 | vsize *= 2; | |
60 | new = (struct dirent64 **) realloc (v, vsize * sizeof (*v)); | |
61 | if (new == NULL) | |
62 | break; | |
63 | v = new; | |
64 | } | |
65 | ||
66 | dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d; | |
67 | vnew = (struct dirent64 *) malloc (dsize); | |
68 | if (vnew == NULL) | |
69 | break; | |
70 | ||
71 | v[i++] = (struct dirent64 *) memcpy (vnew, d, dsize); | |
72 | } | |
73 | ||
74 | if (errno != 0) | |
75 | { | |
76 | save = errno; | |
50304ef0 | 77 | (void) __closedir (dp); |
89a9e37b UD |
78 | while (i > 0) |
79 | free (v[--i]); | |
80 | free (v); | |
81 | __set_errno (save); | |
82 | return -1; | |
83 | } | |
84 | ||
50304ef0 | 85 | (void) __closedir (dp); |
89a9e37b UD |
86 | __set_errno (save); |
87 | ||
88 | /* Sort the list if we have a comparison function to sort with. */ | |
89 | if (cmp != NULL) | |
90 | qsort (v, i, sizeof (*v), cmp); | |
91 | *namelist = v; | |
92 | return i; | |
93 | } |