404db20877
The srandom function is not available unless _XOPEN_SOURCE is set > 500 or an equivalent declaration is done. Let's set it. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
38 lines
854 B
C
38 lines
854 B
C
/*
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* Copyright (c) 2024 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Bottom/Linux side of the pseudo-random entropy generator for
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* ARCH_POSIX architecture
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*/
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#undef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#include <stdbool.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/random.h>
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#include "nsi_tracing.h"
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void entropy_native_seed(unsigned int seed, bool seed_random)
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{
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if (seed_random == false) {
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srandom(seed);
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} else {
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unsigned int buf;
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int err = getrandom(&buf, sizeof(buf), 0);
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if (err != sizeof(buf)) {
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nsi_print_error_and_exit("Could not get random number (%i, %s)\n",
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err, strerror(errno));
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}
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srandom(buf);
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/* Let's print the seed so users can still reproduce the run if they need to */
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nsi_print_trace("Random generator seeded with 0x%X\n", buf);
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}
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}
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