mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Interfaces for obtaining random bytes.
|
|
Copyright (C) 2016-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_RANDOM_H
|
|
#define _SYS_RANDOM_H 1
|
|
|
|
#include <features.h>
|
|
#include <sys/types.h>
|
|
|
|
/* Flags for use with getrandom. */
|
|
#define GRND_NONBLOCK 0x01
|
|
#define GRND_RANDOM 0x02
|
|
#define GRND_INSECURE 0x04
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Write LENGTH bytes of randomness starting at BUFFER. Return the
|
|
number of bytes written, or -1 on error. */
|
|
ssize_t getrandom (void *__buffer, size_t __length,
|
|
unsigned int __flags) __wur
|
|
__attr_access ((__write_only__, 1, 2));
|
|
|
|
/* Write LENGTH bytes of randomness starting at BUFFER. Return 0 on
|
|
success or -1 on error. */
|
|
int getentropy (void *__buffer, size_t __length) __wur
|
|
__attr_access ((__write_only__, 1, 2));
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* _SYS_RANDOM_H */
|