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29 lines
569 B
C
29 lines
569 B
C
/*
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* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "sys/random.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <unistd.h>
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// getrandom() is not available on macOS, so we read from /dev/urandom instead.
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int getrandom(void *buf, size_t buflen, unsigned int flags)
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{
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int fd = open("/dev/urandom", O_RDONLY);
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if (fd < 0) {
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return -1;
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}
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ssize_t ret = read(fd, buf, buflen);
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close(fd);
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if (ret < 0) {
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return -1;
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}
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return 0;
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}
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