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      1 /*	$NetBSD: sysv_shm_14.c,v 1.18 2019/01/27 02:08:39 pgoyette 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  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_14.c,v 1.18 2019/01/27 02:08:39 pgoyette Exp $");
     35 
     36 #if defined(_KERNEL_OPT)
     37 #include "opt_compat_netbsd.h"
     38 #endif
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/signal.h>
     43 #include <sys/proc.h>
     44 #include <sys/shm.h>
     45 
     46 #ifndef SYSVSHM
     47 #define	SYSVSHM
     48 #endif
     49 
     50 #include <sys/syscallargs.h>
     51 
     52 #include <compat/sys/shm.h>
     53 
     54 
     55 int
     56 compat_14_sys_shmctl(struct lwp *l, const struct compat_14_sys_shmctl_args *uap, register_t *retval)
     57 {
     58 	/* {
     59 		syscallarg(int) shmid;
     60 		syscallarg(int) cmd;
     61 		syscallarg(struct shmid_ds14 *) buf;
     62 	} */
     63 	struct shmid_ds shmbuf;
     64 	struct shmid_ds14 oshmbuf;
     65 	int cmd, error;
     66 
     67 	cmd = SCARG(uap, cmd);
     68 
     69 	if (cmd == IPC_SET) {
     70 		error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
     71 		if (error)
     72 			return (error);
     73 		__shmid_ds14_to_native(&oshmbuf, &shmbuf);
     74 	}
     75 
     76 	error = shmctl1(l, SCARG(uap, shmid), cmd,
     77 	    (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
     78 
     79 	if (error == 0 && cmd == IPC_STAT) {
     80 		__native_to_shmid_ds14(&shmbuf, &oshmbuf);
     81 		error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
     82 	}
     83 
     84 	return (error);
     85 }
     86