1 | /* Test the creation of many struct __res_state objects. |
2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <mcheck.h> |
20 | #include <resolv.h> |
21 | #include <resolv/resolv_context.h> |
22 | #include <stdlib.h> |
23 | #include <support/check.h> |
24 | |
25 | /* Order the resolver states by their extended resolver state |
26 | index. */ |
27 | static int |
28 | sort_res_state (const void *a, const void *b) |
29 | { |
30 | res_state left = (res_state) a; |
31 | res_state right = (res_state) b; |
32 | return memcmp (s1: &left->_u._ext.__glibc_extension_index, |
33 | s2: &right->_u._ext.__glibc_extension_index, |
34 | n: sizeof (left->_u._ext.__glibc_extension_index)); |
35 | } |
36 | |
37 | static int |
38 | do_test (void) |
39 | { |
40 | mtrace (); |
41 | |
42 | enum { count = 100 * 1000 }; |
43 | res_state array = calloc (nmemb: count, size: sizeof (*array)); |
44 | const struct resolv_conf *conf = NULL; |
45 | for (size_t i = 0; i < count; ++i) |
46 | { |
47 | TEST_VERIFY (res_ninit (array + i) == 0); |
48 | TEST_VERIFY (array[i].nscount > 0); |
49 | struct resolv_context *ctx = __resolv_context_get_override (array + i); |
50 | TEST_VERIFY_EXIT (ctx != NULL); |
51 | TEST_VERIFY (ctx->resp == array + i); |
52 | if (i == 0) |
53 | { |
54 | conf = ctx->conf; |
55 | TEST_VERIFY (conf != NULL); |
56 | } |
57 | else |
58 | /* The underyling configuration should be identical across all |
59 | res_state opjects because resolv.conf did not change. */ |
60 | TEST_VERIFY (ctx->conf == conf); |
61 | } |
62 | qsort (base: array, nmemb: count, size: sizeof (*array), compar: sort_res_state); |
63 | for (size_t i = 1; i < count; ++i) |
64 | /* All extension indices should be different. */ |
65 | TEST_VERIFY (sort_res_state (array + i - 1, array + i) < 0); |
66 | for (size_t i = 0; i < count; ++i) |
67 | res_nclose (array + i); |
68 | free (ptr: array); |
69 | |
70 | TEST_VERIFY (res_init () == 0); |
71 | return 0; |
72 | } |
73 | |
74 | #define TIMEOUT 50 |
75 | #include <support/test-driver.c> |
76 | |