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sysv_sem_50.c revision 1.2.10.1
      1  1.2.10.1     rmind /*	$NetBSD: sysv_sem_50.c,v 1.2.10.1 2011/03/05 20:52:39 rmind Exp $	*/
      2       1.2  christos 
      3       1.2  christos /*-
      4       1.2  christos  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5       1.2  christos  * All rights reserved.
      6       1.2  christos  *
      7       1.2  christos  * This code is derived from software contributed to The NetBSD Foundation
      8       1.2  christos  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9       1.2  christos  * NASA Ames Research Center.
     10       1.2  christos  *
     11       1.2  christos  * Redistribution and use in source and binary forms, with or without
     12       1.2  christos  * modification, are permitted provided that the following conditions
     13       1.2  christos  * are met:
     14       1.2  christos  * 1. Redistributions of source code must retain the above copyright
     15       1.2  christos  *    notice, this list of conditions and the following disclaimer.
     16       1.2  christos  * 2. Redistributions in binary form must reproduce the above copyright
     17       1.2  christos  *    notice, this list of conditions and the following disclaimer in the
     18       1.2  christos  *    documentation and/or other materials provided with the distribution.
     19       1.2  christos  * 3. All advertising materials mentioning features or use of this software
     20       1.2  christos  *    must display the following acknowledgement:
     21       1.2  christos  *	This product includes software developed by the NetBSD
     22       1.2  christos  *	Foundation, Inc. and its contributors.
     23       1.2  christos  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24       1.2  christos  *    contributors may be used to endorse or promote products derived
     25       1.2  christos  *    from this software without specific prior written permission.
     26       1.2  christos  *
     27       1.2  christos  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28       1.2  christos  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29       1.2  christos  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30       1.2  christos  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31       1.2  christos  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32       1.2  christos  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33       1.2  christos  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34       1.2  christos  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35       1.2  christos  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36       1.2  christos  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37       1.2  christos  * POSSIBILITY OF SUCH DAMAGE.
     38       1.2  christos  */
     39       1.2  christos 
     40       1.2  christos #include <sys/cdefs.h>
     41  1.2.10.1     rmind __KERNEL_RCSID(0, "$NetBSD: sysv_sem_50.c,v 1.2.10.1 2011/03/05 20:52:39 rmind Exp $");
     42       1.2  christos 
     43       1.2  christos #include <sys/param.h>
     44       1.2  christos #include <sys/systm.h>
     45       1.2  christos #include <sys/signal.h>
     46       1.2  christos #include <sys/proc.h>
     47       1.2  christos #include <sys/sem.h>
     48       1.2  christos 
     49       1.2  christos #ifndef SYSVSEM
     50       1.2  christos #define	SYSVSEM
     51       1.2  christos #endif
     52       1.2  christos 
     53       1.2  christos #include <sys/syscallargs.h>
     54       1.2  christos 
     55       1.2  christos #include <compat/sys/sem.h>
     56       1.2  christos 
     57       1.2  christos int
     58       1.2  christos compat_50_sys_____semctl13(struct lwp *l, const struct compat_50_sys_____semctl13_args *uap, register_t *retval)
     59       1.2  christos {
     60       1.2  christos 	/* {
     61       1.2  christos 		syscallarg(int) semid;
     62       1.2  christos 		syscallarg(int) semnum;
     63       1.2  christos 		syscallarg(int) cmd;
     64       1.2  christos 		syscallarg(union __semun *) arg;
     65       1.2  christos 	} */
     66       1.2  christos 	union __semun arg;
     67       1.2  christos 	struct semid_ds sembuf;
     68       1.2  christos 	struct semid_ds13 osembuf;
     69       1.2  christos 	int cmd, error;
     70       1.2  christos 	void *pass_arg;
     71       1.2  christos 
     72       1.2  christos 	cmd = SCARG(uap, cmd);
     73       1.2  christos 
     74       1.2  christos 	pass_arg = get_semctl_arg(cmd, &sembuf, &arg);
     75       1.2  christos 
     76       1.2  christos 	if (pass_arg != NULL) {
     77       1.2  christos 		error = copyin(SCARG(uap, arg), &arg, sizeof(arg));
     78       1.2  christos 		if (error)
     79       1.2  christos 			return (error);
     80       1.2  christos 		if (cmd == IPC_SET) {
     81       1.2  christos 			error = copyin(arg.buf, &osembuf, sizeof(osembuf));
     82       1.2  christos 			if (error)
     83       1.2  christos 				return (error);
     84       1.2  christos 			__semid_ds13_to_native(&osembuf, &sembuf);
     85       1.2  christos 		}
     86       1.2  christos 	}
     87       1.2  christos 
     88       1.2  christos 	error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd,
     89       1.2  christos 	    pass_arg, retval);
     90       1.2  christos 
     91       1.2  christos 	if (error == 0 && cmd == IPC_STAT) {
     92       1.2  christos 		__native_to_semid_ds13(&sembuf, &osembuf);
     93       1.2  christos 		error = copyout(&osembuf, arg.buf, sizeof(osembuf));
     94       1.2  christos 	}
     95       1.2  christos 
     96       1.2  christos 	return (error);
     97       1.2  christos }
     98