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/* $MirOS: contrib/hosted/fwcf/sys_linux.c,v 1.3 2006/09/26 10:25:03 tg Exp $ */
/*-
* Copyright (c) 2006
* Thorsten Glaser <tg@mirbsd.de>
*
* Licensee is hereby permitted to deal in this work without restric-
* tion, including unlimited rights to use, publicly perform, modify,
* merge, distribute, sell, give away or sublicence, provided all co-
* pyright notices above, these terms and the disclaimer are retained
* in all redistributions or reproduced in accompanying documentation
* or other materials provided with binary redistributions.
*
* Licensor offers the work "AS IS" and WITHOUT WARRANTY of any kind,
* express, or implied, to the maximum extent permitted by applicable
* law, without malicious intent or gross negligence; in no event may
* licensor, an author or contributor be held liable for any indirect
* or other damage, or direct damage except proven a consequence of a
* direct error of said person and intended use of this work, loss or
* other issues arising in any way out of its use, even if advised of
* the possibility of such damage or existence of a defect.
*/
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "defs.h"
#include "sysdeps.h"
__RCSID("$MirOS: contrib/hosted/fwcf/sys_linux.c,v 1.3 2006/09/26 10:25:03 tg Exp $");
void
pull_rndata(uint8_t *buf, size_t n)
{
int fd;
if ((fd = open("/dev/urandom", O_RDONLY)) < 0) {
warn("Cannot open /dev/urandom for %sing", "read");
return;
}
if ((size_t)read(fd, buf, n) != n)
warn("Cannot read %lu bytes from /dev/urandom", (u_long)n);
close(fd);
}
void
push_rndata(uint8_t *buf, size_t n)
{
int fd;
if ((fd = open("/dev/urandom", O_WRONLY)) < 0) {
warn("Cannot open /dev/urandom for %sing", "writ");
return;
}
if ((size_t)write(fd, buf, n) != n)
warn("Cannot write %lu bytes to /dev/urandom", (u_long)n);
close(fd);
}
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