/* $NetBSD: linux_shm.h,v 1.12 2008/04/28 20:23:44 martin Exp $ */

/* $NetBSD: linux_shm.h,v 1.12 2008/04/28 20:23:44 martin Exp $ */

/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* 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 _LINUX_SHM_H
#define _LINUX_SHM_H

#include <sys/shm.h>

/*
* shm segment control structure
*/
struct linux_shmid_ds {
struct linux_ipc_perm l_shm_perm;
int l_shm_segsz;
linux_time_t l_shm_atime;
linux_time_t l_shm_dtime;
linux_time_t l_shm_ctime;
ushort l_shm_cpid;
ushort l_shm_lpid;
short l_shm_nattch;
ushort l_private1;
void *l_private2;
void *l_private3;
};

struct linux_shmid64_ds {
struct linux_ipc64_perm l_shm_perm;
size_t l_shm_segsz;
linux_time_t l_shm_atime;
#ifndef _LP64
u_long l____unused1;
#endif
linux_time_t l_shm_dtime;
#ifndef _LP64
u_long l____unused2;
#endif
linux_time_t l_shm_ctime;
#ifndef _LP64
u_long l____unused3;
#endif
int l_shm_cpid;
int l_shm_lpid;
u_long l_shm_nattch;
u_long l___unused4;
u_long l___unused5;
};

struct linux_shminfo64 {
u_long l_shmmax;
u_long l_shmmin;
u_long l_shmmni;
u_long l_shmseg;
u_long l_shmall;
u_long l___unused1;
u_long l___unused2;
u_long l___unused3;
u_long l___unused4;
};

struct linux_shm_info {
int l_used_ids;
u_long l_shm_tot;
u_long l_shm_rss;
u_long l_shm_swp;
u_long l_swap_attempts;
u_long l_swap_successes;
};

#define LINUX_SHM_RDONLY 0x1000
#define LINUX_SHM_RND 0x2000
#define LINUX_SHM_REMAP 0x4000

#define LINUX_SHM_LOCK 11
#define LINUX_SHM_UNLOCK 12
#define LINUX_SHM_STAT 13
#define LINUX_SHM_INFO 14

/* Pretend the sys_shmat and sys_shmctl syscalls are defined */
struct linux_sys_shmat_args {
syscallarg(int) shmid;
syscallarg(void *) shmaddr;
syscallarg(int) shmflg;
syscallarg(u_long *) raddr;
};

struct linux_sys_shmctl_args {
syscallarg(int) shmid;
syscallarg(int) cmd;
syscallarg(struct linux_shmid_ds *) buf;
};

struct linux_sys_shmget_args {
syscallarg(key_t) key;
syscallarg(size_t) size;
syscallarg(int) shmflg;
};

#ifdef SYSVSHM
#ifdef _KERNEL
__BEGIN_DECLS
int linux_sys_shmget(struct lwp *, const struct linux_sys_shmget_args *, register_t *);
int linux_sys_shmat(struct lwp *, const struct linux_sys_shmat_args *, register_t *);
int linux_sys_shmctl(struct lwp *, const struct linux_sys_shmctl_args *, register_t *);
void linux_to_bsd_shmid_ds(struct linux_shmid_ds *,
struct shmid_ds *);
void linux_to_bsd_shmid64_ds(struct linux_shmid64_ds *,
struct shmid_ds *);
void bsd_to_linux_shmid_ds(struct shmid_ds *,
struct linux_shmid_ds *);
void bsd_to_linux_shmid64_ds(struct shmid_ds *,
struct linux_shmid64_ds *);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !SYSVSHM */

#endif /* !_LINUX_SHM_H */