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https://github.com/espressif/esp-idf.git
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a9fda54d39
This commit updates the visibility of various header files and cleans up some unnecessary inclusions. Also, this commit removes certain header include paths which were maintained for backward compatibility.
36 lines
896 B
C
36 lines
896 B
C
/*
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* SPDX-FileCopyrightText: 2018-2022 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 <sys/param.h>
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include "esp_random.h"
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#include "esp_log.h"
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static const char *TAG = "RANDOM";
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ssize_t getrandom(void *buf, size_t buflen, unsigned int flags)
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{
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// Flags are ignored because:
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// - esp_random is non-blocking so it works for both blocking and non-blocking calls,
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// - don't have opportunity so set som other source of entropy.
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ESP_LOGD(TAG, "getrandom(buf=0x%x, buflen=%d, flags=%u)", (int) buf, buflen, flags);
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if (buf == NULL) {
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errno = EFAULT;
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ESP_LOGD(TAG, "getrandom returns -1 (EFAULT)");
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return -1;
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}
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esp_fill_random(buf, buflen);
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ESP_LOGD(TAG, "getrandom returns %d", buflen);
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return buflen;
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}
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