rte_posix_osadapter_random.c

Go to the documentation of this file.

/* getentropy() is declared by <unistd.h> on glibc only under _DEFAULT_SOURCE; macOS declares it in <sys/random.h>. */
#define _DEFAULT_SOURCE

#include "rte/posix_osadapter/rte_posix_osadapter.h"
 
#include <unistd.h>
#if defined(__APPLE__)
#include <sys/random.h>
#endif
 
static rte_status_t osadapter_fill(uint8_t *out, size_t len);
 
static const rte_osadapter_random_t s_posix_random_osadapter = { osadapter_fill };
 
const rte_osadapter_random_t *rte_posix_osadapter_random(void)
{
    return &s_posix_random_osadapter;
}
 
static rte_status_t osadapter_fill(uint8_t *out, size_t len)
{
    rte_status_t status = RTE_STATUS_HARDWARE_FAULT;
 
    if ((out != NULL) && (len > 0U) && (len <= (size_t)RTE_RANDOM_MAX_REQUEST))
    {
        if (getentropy(out, len) == 0)
        {
            status = RTE_STATUS_OK;
        }
    }
    else
    {
        status = RTE_STATUS_INVALID_PARAM;
    }
    return status;
}