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04277e02 | 1 | /* Copyright (C) 2000-2019 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 | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
89a9e37b UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
89a9e37b | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
89a9e37b | 17 | |
c0123b3b | 18 | #define scandir __no_scandir_decl |
89a9e37b | 19 | #include <dirent.h> |
c0123b3b | 20 | #undef scandir |
56ddf355 | 21 | |
c0123b3b AZ |
22 | int |
23 | __scandir64 (const char *dir, struct dirent64 ***namelist, | |
24 | int (*select) (const struct dirent64 *), | |
25 | int (*cmp) (const struct dirent64 **, const struct dirent64 **)) | |
26 | { | |
27 | return __scandir64_tail (__opendir (dir), namelist, select, cmp); | |
28 | } | |
56ddf355 | 29 | |
c0123b3b AZ |
30 | #if _DIRENT_MATCHES_DIRENT64 |
31 | weak_alias (__scandir64, scandir64) | |
32 | weak_alias (__scandir64, scandir) | |
33 | #else | |
34 | # include <shlib-compat.h> | |
56ddf355 | 35 | versioned_symbol (libc, __scandir64, scandir64, GLIBC_2_2); |
c0123b3b AZ |
36 | # if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) |
37 | # include <string.h> | |
38 | # include <errno.h> | |
39 | # include "olddirent.h" | |
56ddf355 | 40 | |
c55fbd1e | 41 | int |
80d9be81 JM |
42 | __old_scandir64 (const char *dir, struct __old_dirent64 ***namelist, |
43 | int (*select) (const struct __old_dirent64 *), | |
44 | int (*cmp) (const struct __old_dirent64 **, | |
45 | const struct __old_dirent64 **)) | |
c55fbd1e UD |
46 | { |
47 | DIR *dp = __opendir (dir); | |
48 | struct __old_dirent64 **v = NULL; | |
49 | size_t vsize = 0; | |
50 | struct scandir_cancel_struct c; | |
51 | struct __old_dirent64 *d; | |
52 | int save; | |
56ddf355 | 53 | |
c55fbd1e UD |
54 | if (dp == NULL) |
55 | return -1; | |
56ddf355 | 56 | |
c55fbd1e UD |
57 | save = errno; |
58 | __set_errno (0); | |
59 | ||
60 | c.dp = dp; | |
61 | c.v = NULL; | |
62 | c.cnt = 0; | |
63 | __libc_cleanup_push (__scandir_cancel_handler, &c); | |
64 | ||
65 | while ((d = __old_readdir64 (dp)) != NULL) | |
66 | { | |
67 | int use_it = select == NULL; | |
68 | ||
69 | if (! use_it) | |
70 | { | |
71 | use_it = select (d); | |
72 | /* The select function might have changed errno. It was | |
73 | zero before and it need to be again to make the latter | |
74 | tests work. */ | |
75 | __set_errno (0); | |
76 | } | |
77 | ||
78 | if (use_it) | |
79 | { | |
80 | struct __old_dirent64 *vnew; | |
81 | size_t dsize; | |
82 | ||
83 | /* Ignore errors from select or readdir */ | |
84 | __set_errno (0); | |
85 | ||
a1ffb40e | 86 | if (__glibc_unlikely (c.cnt == vsize)) |
c55fbd1e UD |
87 | { |
88 | struct __old_dirent64 **new; | |
89 | if (vsize == 0) | |
90 | vsize = 10; | |
91 | else | |
92 | vsize *= 2; | |
93 | new = (struct __old_dirent64 **) realloc (v, | |
94 | vsize * sizeof (*v)); | |
95 | if (new == NULL) | |
96 | break; | |
97 | v = new; | |
98 | c.v = (void *) v; | |
99 | } | |
100 | ||
101 | dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d; | |
102 | vnew = (struct __old_dirent64 *) malloc (dsize); | |
103 | if (vnew == NULL) | |
104 | break; | |
105 | ||
106 | v[c.cnt++] = (struct __old_dirent64 *) memcpy (vnew, d, dsize); | |
107 | } | |
108 | } | |
109 | ||
110 | if (__builtin_expect (errno, 0) != 0) | |
111 | { | |
112 | save = errno; | |
113 | ||
114 | while (c.cnt > 0) | |
115 | free (v[--c.cnt]); | |
116 | free (v); | |
117 | c.cnt = -1; | |
118 | } | |
119 | else | |
120 | { | |
121 | /* Sort the list if we have a comparison function to sort with. */ | |
122 | if (cmp != NULL) | |
123 | qsort (v, c.cnt, sizeof (*v), | |
124 | (int (*) (const void *, const void *)) cmp); | |
125 | ||
126 | *namelist = v; | |
127 | } | |
128 | ||
129 | __libc_cleanup_pop (0); | |
130 | ||
131 | (void) __closedir (dp); | |
132 | __set_errno (save); | |
56ddf355 | 133 | |
c55fbd1e UD |
134 | return c.cnt; |
135 | } | |
56ddf355 UD |
136 | compat_symbol (libc, __old_scandir64, scandir64, GLIBC_2_1); |
137 | ||
c0123b3b AZ |
138 | # endif /* SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) */ |
139 | #endif /* _DIRENT_MATCHES_DIRENT64 */ |