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75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* Test the creation of many struct __res_state objects.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <mcheck.h>
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#include <resolv.h>
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#include <resolv/resolv_context.h>
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#include <stdlib.h>
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#include <support/check.h>
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/* Order the resolver states by their extended resolver state
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index. */
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static int
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sort_res_state (const void *a, const void *b)
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{
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res_state left = (res_state) a;
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res_state right = (res_state) b;
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return memcmp (&left->_u._ext.__glibc_extension_index,
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&right->_u._ext.__glibc_extension_index,
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sizeof (left->_u._ext.__glibc_extension_index));
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}
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static int
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do_test (void)
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{
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mtrace ();
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enum { count = 100 * 1000 };
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res_state array = calloc (count, sizeof (*array));
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const struct resolv_conf *conf = NULL;
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for (size_t i = 0; i < count; ++i)
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{
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TEST_VERIFY (res_ninit (array + i) == 0);
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TEST_VERIFY (array[i].nscount > 0);
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struct resolv_context *ctx = __resolv_context_get_override (array + i);
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TEST_VERIFY_EXIT (ctx != NULL);
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TEST_VERIFY (ctx->resp == array + i);
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if (i == 0)
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{
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conf = ctx->conf;
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TEST_VERIFY (conf != NULL);
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}
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else
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/* The underyling configuration should be identical across all
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res_state opjects because resolv.conf did not change. */
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TEST_VERIFY (ctx->conf == conf);
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}
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qsort (array, count, sizeof (*array), sort_res_state);
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for (size_t i = 1; i < count; ++i)
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/* All extension indices should be different. */
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TEST_VERIFY (sort_res_state (array + i - 1, array + i) < 0);
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for (size_t i = 0; i < count; ++i)
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res_nclose (array + i);
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free (array);
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TEST_VERIFY (res_init () == 0);
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return 0;
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}
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#include <support/test-driver.c>
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