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sysv_msg_14.c revision 1.3 
      1 /*	$NetBSD: sysv_msg_14.c,v 1.3 2000/12/21 19:30:26 jdolecek Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/signal.h>
     43 #include <sys/proc.h>
     44 #include <sys/mount.h>
     45 #include <sys/msg.h>
     46 
     47 #ifndef SYSVMSG
     48 #define	SYSVMSG
     49 #endif
     50 
     51 #include <sys/syscallargs.h>
     52 
     53 static void msqid_ds14_to_native __P((struct msqid_ds14 *, struct msqid_ds *));
     54 static void native_to_msqid_ds14 __P((struct msqid_ds *, struct msqid_ds14 *));
     55 
     56 static void
     57 msqid_ds14_to_native(omsqbuf, msqbuf)
     58 	struct msqid_ds14 *omsqbuf;
     59 	struct msqid_ds *msqbuf;
     60 {
     61 
     62 	ipc_perm14_to_native(&omsqbuf->msg_perm, &msqbuf->msg_perm);
     63 
     64 #define	CVT(x)	msqbuf->x = omsqbuf->x
     65 	CVT(msg_qnum);
     66 	CVT(msg_qbytes);
     67 	CVT(msg_lspid);
     68 	CVT(msg_lrpid);
     69 	CVT(msg_stime);
     70 	CVT(msg_rtime);
     71 	CVT(msg_ctime);
     72 #undef CVT
     73 }
     74 
     75 static void
     76 native_to_msqid_ds14(msqbuf, omsqbuf)
     77 	struct msqid_ds *msqbuf;
     78 	struct msqid_ds14 *omsqbuf;
     79 {
     80 
     81 	native_to_ipc_perm14(&msqbuf->msg_perm, &omsqbuf->msg_perm);
     82 
     83 #define	CVT(x)	omsqbuf->x = msqbuf->x
     84 	CVT(msg_qnum);
     85 	CVT(msg_qbytes);
     86 	CVT(msg_lspid);
     87 	CVT(msg_lrpid);
     88 	CVT(msg_stime);
     89 	CVT(msg_rtime);
     90 	CVT(msg_ctime);
     91 #undef CVT
     92 
     93 	/*
     94 	 * Not part of the API, but some programs might look at it.
     95 	 */
     96 	omsqbuf->msg_cbytes = msqbuf->_msg_cbytes;
     97 }
     98 
     99 int
    100 compat_14_sys_msgctl(p, v, retval)
    101 	struct proc *p;
    102 	void *v;
    103 	register_t *retval;
    104 {
    105 	struct compat_14_sys_msgctl_args /* {
    106 		syscallarg(int) msqid;
    107 		syscallarg(int) cmd;
    108 		syscallarg(struct msqid_ds14 *) buf;
    109 	} */ *uap = v;
    110 	struct msqid_ds msqbuf;
    111 	struct msqid_ds14 omsqbuf;
    112 	int cmd, error;
    113 
    114 	cmd = SCARG(uap, cmd);
    115 
    116 	if (cmd == IPC_SET) {
    117 		error = copyin(SCARG(uap, buf), &omsqbuf, sizeof(omsqbuf));
    118 		if (error)
    119 			return (error);
    120 		msqid_ds14_to_native(&omsqbuf, &msqbuf);
    121 	}
    122 
    123 	error = msgctl1(p, SCARG(uap, msqid), cmd,
    124 	    (cmd == IPC_SET || cmd == IPC_STAT) ? &msqbuf : NULL);
    125 
    126 	if (error == 0 && cmd == IPC_STAT) {
    127 		native_to_msqid_ds14(&msqbuf, &omsqbuf);
    128 		error = copyout(&omsqbuf, SCARG(uap, buf), sizeof(omsqbuf));
    129 	}
    130 
    131 	return (error);
    132 }
    133