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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASARC4RANDOM
#include <skalibs/nonposix.h>
#include <stdlib.h>
#include <skalibs/random.h>
void random_string (char *s, size_t n)
{
arc4random_buf(s, n) ;
}
#else
#ifdef SKALIBS_HASGETRANDOM
#include <skalibs/nonposix.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <skalibs/random.h>
static int getrandom (void *buf, size_t buflen, unsigned int flags)
{
return syscall(SYS_getrandom, buf, buflen, flags) ;
}
void random_string (char *s, size_t n)
{
while (n)
{
int r = getrandom(s, n, 0) ;
if (r >= 0)
{
s += r ;
n -= r ;
}
}
}
#else
#ifdef SKALIBS_HASDEVURANDOM
#include <skalibs/allreadwrite.h>
#include <skalibs/random.h>
#include "random-internal.h"
void random_string (char *s, size_t n)
{
size_t r = allread(random_fd, s, n) ;
if (r < n) surf(&surf_here, s+r, n-r) ;
}
#else /* default */
#include <skalibs/random.h>
#include "random-internal.h"
void random_string (char *s, size_t n)
{
surf(&surf_here, s, n) ;
}
#endif
#endif
#endif
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