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linux_msg.h revision 1.9.6.1 
      1 /*	$NetBSD: linux_msg.h,v 1.9.6.1 2008/06/02 13:23:03 mjf 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_MSG_H
     33 #define _LINUX_MSG_H
     34 
     35 #include <sys/msg.h>
     36 
     37 /*
     38  * msq_id_ds structure. Mostly the same fields, except for some internal
     39  * ones.
     40  */
     41 struct linux_msqid_ds {
     42 	struct linux_ipc_perm	l_msg_perm;
     43 	void			*l_msg_first;
     44 	void			*l_msg_last;
     45 	linux_time_t		l_msg_stime;
     46 	linux_time_t		l_msg_rtime;
     47 	linux_time_t		l_msg_ctime;
     48 	void			*l_wwait;	/* Linux internal */
     49 	void			*l_rwait;	/* Linux internal */
     50 	ushort			l_msg_cbytes;
     51 	ushort			l_msg_qnum;
     52 	ushort			l_msg_qbytes;
     53 	ushort			l_msg_lspid;
     54 	ushort			l_msg_lrpid;
     55 };
     56 
     57 struct linux_msqid64_ds {
     58 	struct linux_ipc64_perm	l_msg_perm;
     59 	linux_time_t		l_msg_stime;
     60 	linux_time_t		l_msg_rtime;
     61 	linux_time_t		l_msg_ctime;
     62 	ulong			l_msg_cbytes;
     63 	ulong			l_msg_qnum;
     64 	ulong			l_msg_qbytes;
     65 	int			l_msg_lspid;
     66 	int			l_msg_lrpid;
     67 	ulong			l___unused4;
     68 	ulong			l___unused5;
     69 
     70 };
     71 
     72 #define LINUX_MSG_NOERROR	0x1000
     73 #define LINUX_MSG_EXCEPT	0x2000
     74 
     75 /*
     76  * The notorious anonymous message structure.
     77  */
     78 struct linux_mymsg {
     79 	long	l_mtype;
     80 	char	l_mtext[1];
     81 };
     82 
     83 /*
     84  * This kludge is used for the 6th argument to the msgrcv system
     85  * call, to get around the maximum of 5 arguments to a syscall in Linux.
     86  */
     87 struct linux_msgrcv_msgarg {
     88 	struct linux_mymsg *msg;
     89 	int type;
     90 };
     91 /*
     92  * For msgctl calls.
     93  */
     94 struct linux_msginfo {
     95 	int	l_msgpool;
     96 	int	l_msgmap;
     97 	int	l_msgmax;
     98 	int	l_msgmnb;
     99 	int	l_msgmni;
    100 	int	l_msgssz;
    101 	int	l_msgtql;
    102 	ushort	l_msgseg;
    103 };
    104 
    105 #define LINUX_MSG_STAT	11
    106 #define LINUX_MSG_INFO	12
    107 
    108 /* Pretend the sys_msgctl syscall is defined */
    109 struct linux_sys_msgctl_args {
    110 	syscallarg(int) msqid;
    111 	syscallarg(int) cmd;
    112 	syscallarg(struct linux_msqid_ds *) buf;
    113 };
    114 
    115 
    116 #ifdef SYSVMSG
    117 #ifdef _KERNEL
    118 __BEGIN_DECLS
    119 int linux_sys_msgctl(struct lwp *, const struct linux_sys_msgctl_args *, register_t *);
    120 void linux_to_bsd_msqid_ds(struct linux_msqid_ds *, struct msqid_ds *);
    121 void linux_to_bsd_msqid64_ds(struct linux_msqid64_ds *, struct msqid_ds *);
    122 void bsd_to_linux_msqid_ds(struct msqid_ds *, struct linux_msqid_ds *);
    123 void bsd_to_linux_msqid64_ds(struct msqid_ds *, struct linux_msqid64_ds *);
    124 __END_DECLS
    125 #endif	/* !_KERNEL */
    126 #endif	/* !SYSVMSG */
    127 
    128 #endif /* !_LINUX_MSG_H */
    129