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linux_shm.h revision 1.11 
      1 /*	$NetBSD: linux_shm.h,v 1.11 2008/01/28 14:14:48 njoly Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _LINUX_SHM_H
     40 #define _LINUX_SHM_H
     41 
     42 #include <sys/shm.h>
     43 
     44 /*
     45  * shm segment control structure
     46  */
     47 struct linux_shmid_ds {
     48 	struct linux_ipc_perm	l_shm_perm;
     49 	int			l_shm_segsz;
     50 	linux_time_t		l_shm_atime;
     51 	linux_time_t		l_shm_dtime;
     52 	linux_time_t		l_shm_ctime;
     53 	ushort			l_shm_cpid;
     54 	ushort			l_shm_lpid;
     55 	short			l_shm_nattch;
     56 	ushort			l_private1;
     57 	void			*l_private2;
     58 	void			*l_private3;
     59 };
     60 
     61 struct linux_shmid64_ds {
     62 	struct linux_ipc64_perm	l_shm_perm;
     63 	size_t			l_shm_segsz;
     64 	linux_time_t		l_shm_atime;
     65 #ifndef _LP64
     66 	u_long			l____unused1;
     67 #endif
     68 	linux_time_t		l_shm_dtime;
     69 #ifndef _LP64
     70 	u_long			l____unused2;
     71 #endif
     72 	linux_time_t		l_shm_ctime;
     73 #ifndef _LP64
     74 	u_long			l____unused3;
     75 #endif
     76 	int			l_shm_cpid;
     77 	int			l_shm_lpid;
     78 	u_long			l_shm_nattch;
     79 	u_long			l___unused4;
     80 	u_long			l___unused5;
     81 };
     82 
     83 struct linux_shminfo64 {
     84 	u_long			l_shmmax;
     85 	u_long			l_shmmin;
     86 	u_long			l_shmmni;
     87 	u_long			l_shmseg;
     88 	u_long			l_shmall;
     89 	u_long			l___unused1;
     90 	u_long			l___unused2;
     91 	u_long			l___unused3;
     92 	u_long			l___unused4;
     93 };
     94 
     95 struct linux_shm_info {
     96 	int			l_used_ids;
     97 	u_long			l_shm_tot;
     98 	u_long			l_shm_rss;
     99 	u_long			l_shm_swp;
    100 	u_long			l_swap_attempts;
    101 	u_long			l_swap_successes;
    102 };
    103 
    104 #define LINUX_SHM_RDONLY	0x1000
    105 #define LINUX_SHM_RND		0x2000
    106 #define LINUX_SHM_REMAP		0x4000
    107 
    108 #define LINUX_SHM_LOCK		11
    109 #define LINUX_SHM_UNLOCK	12
    110 #define LINUX_SHM_STAT		13
    111 #define LINUX_SHM_INFO		14
    112 
    113 
    114 /* Pretend the sys_shmat and sys_shmctl syscalls are defined */
    115 struct linux_sys_shmat_args {
    116 	syscallarg(int) shmid;
    117 	syscallarg(void *) shmaddr;
    118 	syscallarg(int) shmflg;
    119 	syscallarg(u_long *) raddr;
    120 };
    121 
    122 struct linux_sys_shmctl_args {
    123 	syscallarg(int) shmid;
    124 	syscallarg(int) cmd;
    125 	syscallarg(struct linux_shmid_ds *) buf;
    126 };
    127 
    128 struct linux_sys_shmget_args {
    129 	syscallarg(key_t) key;
    130 	syscallarg(size_t) size;
    131 	syscallarg(int) shmflg;
    132 };
    133 
    134 #ifdef SYSVSHM
    135 #ifdef _KERNEL
    136 __BEGIN_DECLS
    137 int linux_sys_shmget(struct lwp *, const struct linux_sys_shmget_args *, register_t *);
    138 int linux_sys_shmat(struct lwp *, const struct linux_sys_shmat_args *, register_t *);
    139 int linux_sys_shmctl(struct lwp *, const struct linux_sys_shmctl_args *, register_t *);
    140 void linux_to_bsd_shmid_ds(struct linux_shmid_ds *,
    141     struct shmid_ds *);
    142 void linux_to_bsd_shmid64_ds(struct linux_shmid64_ds *,
    143     struct shmid_ds *);
    144 void bsd_to_linux_shmid_ds(struct shmid_ds *,
    145     struct linux_shmid_ds *);
    146 void bsd_to_linux_shmid64_ds(struct shmid_ds *,
    147     struct linux_shmid64_ds *);
    148 __END_DECLS
    149 #endif	/* !_KERNEL */
    150 #endif	/* !SYSVSHM */
    151 
    152 #endif /* !_LINUX_SHM_H */
    153