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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #pragma weak msgctl = _msgctl 34 #pragma weak msgctl64 = _msgctl64 35 #pragma weak msgget = _msgget 36 #pragma weak msgids = _msgids 37 #pragma weak msgsnap = _msgsnap 38 39 #include "synonyms.h" 40 #include <sys/types.h> 41 #include <sys/ipc.h> 42 #include <sys/ipc_impl.h> 43 #include <sys/msg.h> 44 #include <sys/msg_impl.h> 45 #include <sys/syscall.h> 46 #include <errno.h> 47 #include <limits.h> 48 49 int 50 msgget(key_t key, int msgflg) 51 { 52 return (syscall(SYS_msgsys, MSGGET, key, msgflg)); 53 } 54 55 int 56 msgctl(int msqid, int cmd, struct msqid_ds *buf) 57 { 58 if (cmd == IPC_SET64 || cmd == IPC_STAT64) { 59 (void) __set_errno(EINVAL); 60 return (-1); 61 } 62 63 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 64 } 65 66 int 67 msgctl64(int msqid, int cmd, struct msqid_ds64 *buf) 68 { 69 if (cmd != IPC_SET64 && cmd != IPC_STAT64) { 70 (void) __set_errno(EINVAL); 71 return (-1); 72 } 73 74 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 75 } 76 77 ssize_t 78 _msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg) 79 { 80 if (msgsz > INT_MAX) { 81 sysret_t rval; 82 int error; 83 84 /* 85 * We have to use __systemcall here because in the 86 * 64-bit case, we need to return a long, while 87 * syscall() is doomed to return an int 88 */ 89 error = __systemcall(&rval, SYS_msgsys, MSGRCV, msqid, 90 msgp, msgsz, msgtyp, msgflg); 91 if (error) 92 (void) __set_errno(error); 93 return ((ssize_t)rval.sys_rval1); 94 } 95 return ((ssize_t)syscall(SYS_msgsys, MSGRCV, msqid, 96 msgp, msgsz, msgtyp, msgflg)); 97 } 98 99 int 100 _msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg) 101 { 102 if (msgsz > INT_MAX) { 103 sysret_t rval; 104 int error; 105 106 error = __systemcall(&rval, SYS_msgsys, MSGSND, msqid, 107 msgp, msgsz, msgflg); 108 if (error) 109 (void) __set_errno(error); 110 return ((int)rval.sys_rval1); 111 } 112 return (syscall(SYS_msgsys, MSGSND, msqid, msgp, msgsz, msgflg)); 113 } 114 115 int 116 msgids(int *buf, uint_t nids, uint_t *pnids) 117 { 118 return (syscall(SYS_msgsys, MSGIDS, buf, nids, pnids)); 119 } 120 121 int 122 msgsnap(int msqid, void *buf, size_t bufsz, long msgtyp) 123 { 124 return (syscall(SYS_msgsys, MSGSNAP, msqid, buf, bufsz, msgtyp)); 125 } 126