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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*	Copyright (c) 1988 AT&T	*/
     28 /*	  All Rights Reserved  	*/
     29 
     30 #pragma weak _shmat = shmat
     31 #pragma weak _shmctl = shmctl
     32 #pragma weak _shmctl64 = shmctl64
     33 #pragma weak _shmdt = shmdt
     34 #pragma weak _shmget = shmget
     35 #pragma weak _shmids = shmids
     36 
     37 #include "lint.h"
     38 #include <sys/types.h>
     39 #include <sys/ipc.h>
     40 #include <sys/ipc_impl.h>
     41 #include <sys/shm.h>
     42 #include <sys/shm_impl.h>
     43 #include <sys/syscall.h>
     44 #include <errno.h>
     45 
     46 void *
     47 shmat(int shmid, const void *shmaddr, int shmflg)
     48 {
     49 	sysret_t rval;
     50 	int error;
     51 
     52 	error = __systemcall(&rval, SYS_shmsys, SHMAT, shmid, shmaddr, shmflg);
     53 	if (error)
     54 		(void) __set_errno(error);
     55 	return ((void *)rval.sys_rval1);
     56 }
     57 
     58 int
     59 shmctl(int shmid, int cmd, struct shmid_ds *buf)
     60 {
     61 	if (cmd == IPC_SET64 || cmd == IPC_STAT64) {
     62 		(void) __set_errno(EINVAL);
     63 		return (-1);
     64 	}
     65 	return (syscall(SYS_shmsys, SHMCTL, shmid, cmd, buf));
     66 }
     67 
     68 int
     69 shmctl64(int shmid, int cmd, struct shmid_ds64 *buf)
     70 {
     71 	if (cmd != IPC_SET64 && cmd != IPC_STAT64) {
     72 		(void) __set_errno(EINVAL);
     73 		return (-1);
     74 	}
     75 	return (syscall(SYS_shmsys, SHMCTL, shmid, cmd, buf));
     76 }
     77 
     78 int
     79 shmdt(char *shmaddr)
     80 {
     81 	return (syscall(SYS_shmsys, SHMDT, shmaddr));
     82 }
     83 
     84 int
     85 shmget(key_t key, size_t size, int shmflg)
     86 {
     87 	return (syscall(SYS_shmsys, SHMGET, key, size, shmflg));
     88 }
     89 
     90 int
     91 shmids(int *buf, uint_t nids, uint_t *pnids)
     92 {
     93 	return (syscall(SYS_shmsys, SHMIDS, buf, nids, pnids));
     94 }
     95