glibc/stdlib/sys/random.h
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

44 lines
1.4 KiB
C

/* Interfaces for obtaining random bytes.
Copyright (C) 2016-2022 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;
/* 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 */