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linux_msg.h revision 1.10 
      1 /*	$NetBSD: linux_msg.h,v 1.10 2008/04/28 20:23:43 martin 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 #define LINUX_MSG_NOERROR	0x1000
     58 #define LINUX_MSG_EXCEPT	0x2000
     59 
     60 /*
     61  * The notorious anonymous message structure.
     62  */
     63 struct linux_mymsg {
     64 	long	l_mtype;
     65 	char	l_mtext[1];
     66 };
     67 
     68 /*
     69  * This kludge is used for the 6th argument to the msgrcv system
     70  * call, to get around the maximum of 5 arguments to a syscall in Linux.
     71  */
     72 struct linux_msgrcv_msgarg {
     73 	struct linux_mymsg *msg;
     74 	int type;
     75 };
     76 /*
     77  * For msgctl calls.
     78  */
     79 struct linux_msginfo {
     80 	int	l_msgpool;
     81 	int	l_msgmap;
     82 	int	l_msgmax;
     83 	int	l_msgmnb;
     84 	int	l_msgmni;
     85 	int	l_msgssz;
     86 	int	l_msgtql;
     87 	ushort	l_msgseg;
     88 };
     89 
     90 #define LINUX_MSG_STAT	11
     91 #define LINUX_MSG_INFO	12
     92 
     93 /* Pretend the sys_msgctl syscall is defined */
     94 struct linux_sys_msgctl_args {
     95 	syscallarg(int) msqid;
     96 	syscallarg(int) cmd;
     97 	syscallarg(struct linux_msqid_ds *) buf;
     98 };
     99 
    100 
    101 #ifdef SYSVMSG
    102 #ifdef _KERNEL
    103 __BEGIN_DECLS
    104 int linux_sys_msgctl(struct lwp *, const struct linux_sys_msgctl_args *, register_t *);
    105 void linux_to_bsd_msqid_ds(struct linux_msqid_ds *,
    106 				       struct msqid_ds *);
    107 void bsd_to_linux_msqid_ds(struct msqid_ds *,
    108 				       struct linux_msqid_ds *);
    109 __END_DECLS
    110 #endif	/* !_KERNEL */
    111 #endif	/* !SYSVMSG */
    112 
    113 #endif /* !_LINUX_MSG_H */
    114