/*      $NetBSD: rnd.h,v 1.7 2019/06/27 02:44:54 christos Exp $ */

/*-
* Copyright (c) 1997,2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Michael Graff <[email protected]>.  This code uses ideas and
* algorithms from the Linux driver written by Ted Ts'o.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _COMPAT_SYS_RND_H_
#define _COMPAT_SYS_RND_H_

#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#include "opt_compat_netbsd32.h"
#endif

#include <sys/types.h>
#include <sys/ioctl.h>

#ifdef COMPAT_NETBSD32
#include <compat/netbsd32/netbsd32.h>
#endif /* COMPAT_NETBSD32 */

#include <sys/rndio.h>

/*
* NetBSD-5 used "void *state" in the rndsource_t struct.  rndsource_t
* was used in rnstat_t and rnstat_name_t, which were used by
* the NetBSD-5 RNDGETSRCNUM and RNDGETSRCNAME ioctls.
*
*/

/* Sanitized random source view for userspace. */
typedef struct {
       char            name[16];       /* device name */
       uint32_t        unused_time;    /* was: last time recorded */
       uint32_t        unused_delta;   /* was: last delta value */
       uint32_t        unused_delta2;  /* was: last delta2 value */
       uint32_t        total;          /* entropy from this source */
       uint32_t        type;           /* type */
       uint32_t        flags;          /* flags */
       void            *unused_state;  /* was: internal state */
} rndsource50_t;

#ifdef COMPAT_NETBSD32
typedef struct {
       char            name[16];       /* device name */
       uint32_t        unused_time;    /* was: last time recorded */
       uint32_t        unused_delta;   /* was: last delta value */
       uint32_t        unused_delta2;  /* was: last delta2 value */
       uint32_t        total;          /* entropy from this source */
       uint32_t        type;           /* type */
       uint32_t        flags;          /* flags */
       netbsd32_voidp  unused_state;   /* was: internal state */
} rndsource50_32_t;
#endif /* COMPAT_NETBSD32 */

/*
* NetBSD-5 defined RND_MAXSTATCOUNT as 10.  We define RND_MAXSTATCOUNT50
* here, and check that the native RND_MAXSTATCOUNT is not smaller.
*/
#define RND_MAXSTATCOUNT50      10      /* 10 sources at once max */
#if (RND_MAXSTATCOUNT50 > RND_MAXSTATCOUNT)
#error "RND_MAXSTATCOUNT50 is too large"
#endif

/*
* return "count" random entries, starting at "start"
*/
typedef struct {
       uint32_t        start;
       uint32_t        count;
       rndsource50_t source[RND_MAXSTATCOUNT50];
} rndstat50_t;

#ifdef COMPAT_NETBSD32
typedef struct {
       uint32_t        start;
       uint32_t        count;
       rndsource50_32_t source[RND_MAXSTATCOUNT50];
} rndstat50_32_t;
#endif /* COMPAT_NETBSD32 */

/*
* return information on a specific source by name
*/
typedef struct {
       char            name[16];
       rndsource50_t source;
} rndstat_name50_t;

#ifdef COMPAT_NETBSD32
typedef struct {
       char            name[16];
       rndsource50_32_t source;
} rndstat_name50_32_t;
#endif /* COMPAT_NETBSD32 */

/*
* NetBSD-5 defined RND_POOLWORDS as 128.  In NetBSD-6, the value
* exposed to userland via the rnddata_t type was renamed to
* RND_SAVEWORDS.  As long as RND_SAVEWORDS remains equal to 128, then
* rnddata_t (used by ioctl RNDADDATA), and rndpoolstat_t (used by ioctl
* RNDGETPOOLSTAT) remain ABI compatible without any extra effort, even
* though the declarations in the source code have changed.
*/
#if (RND_SAVEWORDS != 128)
#error "RND_SAVEWORDS must be 128 for NetBSD-5 compatibility"
#endif

/*
* Compatibility with NetBSD-5 ioctls.
*/
#ifdef _KERNEL
int compat_50_rnd_ioctl(struct file *, u_long, void *);
int compat32_50_rnd_ioctl(struct file *, u_long, void *);
#endif

#define RNDGETSRCNUM50          _IOWR('R', 102, rndstat50_t)
#define RNDGETSRCNAME50         _IOWR('R', 103, rndstat_name50_t)

#ifdef COMPAT_NETBSD32
#define RNDGETSRCNUM50_32       _IOWR('R', 102, rndstat50_32_t)
#define RNDGETSRCNAME50_32      _IOWR('R', 103, rndstat_name50_32_t)
#endif /* COMPAT_NETBSD32 */

#endif /* !_COMPAT_SYS_RND_H_ */

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.