diff options
Diffstat (limited to 'stdlib/sys')
-rw-r--r-- | stdlib/sys/random.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/stdlib/sys/random.h b/stdlib/sys/random.h new file mode 100644 index 0000000..610b468 --- /dev/null +++ b/stdlib/sys/random.h @@ -0,0 +1,42 @@ +/* Interfaces for obtaining random bytes. + Copyright (C) 2016 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 + <http://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 + +__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; + +/* Write LENGTH bytes of randomness starting at BUFFER. Return 0 on + success or -1 on error. */ +int getentropy (void *__buffer, size_t __length) __wur; + +__END_DECLS + +#endif /* _SYS_RANDOM_H */ |