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sysv_shm_14.c revision 1.1.2.2 
      1 /*	$NetBSD: sysv_shm_14.c,v 1.1.2.2 2001/01/05 17:35:20 bouyer 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/shm.h>
     46 
     47 #ifndef SYSVSHM
     48 #define	SYSVSHM
     49 #endif
     50 
     51 #include <sys/syscallargs.h>
     52 
     53 static void shmid_ds14_to_native __P((struct shmid_ds14 *, struct shmid_ds *));
     54 static void native_to_shmid_ds14 __P((struct shmid_ds *, struct shmid_ds14 *));
     55 
     56 static void
     57 shmid_ds14_to_native(oshmbuf, shmbuf)
     58 	struct shmid_ds14 *oshmbuf;
     59 	struct shmid_ds *shmbuf;
     60 {
     61 
     62 	ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm);
     63 
     64 #define	CVT(x)	shmbuf->x = oshmbuf->x
     65 	CVT(shm_segsz);
     66 	CVT(shm_lpid);
     67 	CVT(shm_cpid);
     68 	CVT(shm_nattch);
     69 	CVT(shm_atime);
     70 	CVT(shm_dtime);
     71 	CVT(shm_ctime);
     72 #undef CVT
     73 }
     74 
     75 static void
     76 native_to_shmid_ds14(shmbuf, oshmbuf)
     77 	struct shmid_ds *shmbuf;
     78 	struct shmid_ds14 *oshmbuf;
     79 {
     80 
     81 	native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm);
     82 
     83 #define	CVT(x)	oshmbuf->x = shmbuf->x
     84 	CVT(shm_segsz);
     85 	CVT(shm_lpid);
     86 	CVT(shm_cpid);
     87 	CVT(shm_nattch);
     88 	CVT(shm_atime);
     89 	CVT(shm_dtime);
     90 	CVT(shm_ctime);
     91 #undef CVT
     92 }
     93 
     94 int
     95 compat_14_sys_shmctl(p, v, retval)
     96 	struct proc *p;
     97 	void *v;
     98 	register_t *retval;
     99 {
    100 	struct compat_14_sys_shmctl_args /* {
    101 		syscallarg(int) shmid;
    102 		syscallarg(int) cmd;
    103 		syscallarg(struct shmid_ds14 *) buf;
    104 	} */ *uap = v;
    105 	struct shmid_ds shmbuf;
    106 	struct shmid_ds14 oshmbuf;
    107 	int cmd, error;
    108 
    109 	cmd = SCARG(uap, cmd);
    110 
    111 	if (cmd == IPC_SET) {
    112 		error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
    113 		if (error)
    114 			return (error);
    115 		shmid_ds14_to_native(&oshmbuf, &shmbuf);
    116 	}
    117 
    118 	error = shmctl1(p, SCARG(uap, shmid), cmd,
    119 	    (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
    120 
    121 	if (error == 0 && cmd == IPC_STAT) {
    122 		native_to_shmid_ds14(&shmbuf, &oshmbuf);
    123 		error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
    124 	}
    125 
    126 	return (error);
    127 }
    128