/* Interfaces for obtaining random bytes.
   Copyright (C) 2016-2021 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 */

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acct.h Edit | Delete | Rename
auxv.h Edit | Delete | Rename
bitypes.h Edit | Delete | Rename
cdefs.h Edit | Delete | Rename
debugreg.h Edit | Delete | Rename
dir.h Edit | Delete | Rename
elf.h Edit | Delete | Rename
epoll.h Edit | Delete | Rename
errno.h Edit | Delete | Rename
eventfd.h Edit | Delete | Rename
fanotify.h Edit | Delete | Rename
fcntl.h Edit | Delete | Rename
file.h Edit | Delete | Rename
fsuid.h Edit | Delete | Rename
gmon.h Edit | Delete | Rename
gmon_out.h Edit | Delete | Rename
inotify.h Edit | Delete | Rename
io.h Edit | Delete | Rename
ioctl.h Edit | Delete | Rename
ipc.h Edit | Delete | Rename
kd.h Edit | Delete | Rename
klog.h Edit | Delete | Rename
mman.h Edit | Delete | Rename
mount.h Edit | Delete | Rename
msg.h Edit | Delete | Rename
mtio.h Edit | Delete | Rename
param.h Edit | Delete | Rename
pci.h Edit | Delete | Rename
perm.h Edit | Delete | Rename
personality.h Edit | Delete | Rename
platform
poll.h Edit | Delete | Rename
prctl.h Edit | Delete | Rename
procfs.h Edit | Delete | Rename
profil.h Edit | Delete | Rename
ptrace.h Edit | Delete | Rename
queue.h Edit | Delete | Rename
quota.h Edit | Delete | Rename
random.h Edit | Delete | Rename
raw.h Edit | Delete | Rename
reboot.h Edit | Delete | Rename
reg.h Edit | Delete | Rename
resource.h Edit | Delete | Rename
rseq.h Edit | Delete | Rename
select.h Edit | Delete | Rename
sem.h Edit | Delete | Rename
sendfile.h Edit | Delete | Rename
shm.h Edit | Delete | Rename
signal.h Edit | Delete | Rename
signalfd.h Edit | Delete | Rename
single_threaded.h Edit | Delete | Rename
socket.h Edit | Delete | Rename
socketvar.h Edit | Delete | Rename
soundcard.h Edit | Delete | Rename
stat.h Edit | Delete | Rename
statfs.h Edit | Delete | Rename
statvfs.h Edit | Delete | Rename
swap.h Edit | Delete | Rename
syscall.h Edit | Delete | Rename
sysinfo.h Edit | Delete | Rename
syslog.h Edit | Delete | Rename
sysmacros.h Edit | Delete | Rename
termios.h Edit | Delete | Rename
time.h Edit | Delete | Rename
timeb.h Edit | Delete | Rename
timerfd.h Edit | Delete | Rename
times.h Edit | Delete | Rename
timex.h Edit | Delete | Rename
ttychars.h Edit | Delete | Rename
ttydefaults.h Edit | Delete | Rename
types.h Edit | Delete | Rename
ucontext.h Edit | Delete | Rename
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