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 2008 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 #pragma weak msgctl = _msgctl 33 #pragma weak msgctl64 = _msgctl64 34 #pragma weak msgget = _msgget 35 #pragma weak msgids = _msgids 36 #pragma weak msgsnap = _msgsnap 37 38 #include "synonyms.h" 39 #include <sys/types.h> 40 #include <sys/ipc.h> 41 #include <sys/ipc_impl.h> 42 #include <sys/msg.h> 43 #include <sys/msg_impl.h> 44 #include <sys/syscall.h> 45 #include <errno.h> 46 #include <limits.h> 47 48 int 49 msgget(key_t key, int msgflg) 50 { 51 return (syscall(SYS_msgsys, MSGGET, key, msgflg)); 52 } 53 54 int 55 msgctl(int msqid, int cmd, struct msqid_ds *buf) 56 { 57 if (cmd == IPC_SET64 || cmd == IPC_STAT64) { 58 (void) __set_errno(EINVAL); 59 return (-1); 60 } 61 62 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 63 } 64 65 int 66 msgctl64(int msqid, int cmd, struct msqid_ds64 *buf) 67 { 68 if (cmd != IPC_SET64 && cmd != IPC_STAT64) { 69 (void) __set_errno(EINVAL); 70 return (-1); 71 } 72 73 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 74 } 75 76 ssize_t 77 __msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg) 78 { 79 if (msgsz > INT_MAX) { 80 sysret_t rval; 81 int error; 82 83 /* 84 * We have to use __systemcall here because in the 85 * 64-bit case, we need to return a long, while 86 * syscall() is doomed to return an int 87 */ 88 error = __systemcall(&rval, SYS_msgsys, MSGRCV, msqid, 89 msgp, msgsz, msgtyp, msgflg); 90 if (error) 91 (void) __set_errno(error); 92 return ((ssize_t)rval.sys_rval1); 93 } 94 return ((ssize_t)syscall(SYS_msgsys, MSGRCV, msqid, 95 msgp, msgsz, msgtyp, msgflg)); 96 } 97 98 int 99 __msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg) 100 { 101 if (msgsz > INT_MAX) { 102 sysret_t rval; 103 int error; 104 105 error = __systemcall(&rval, SYS_msgsys, MSGSND, msqid, 106 msgp, msgsz, msgflg); 107 if (error) 108 (void) __set_errno(error); 109 return ((int)rval.sys_rval1); 110 } 111 return (syscall(SYS_msgsys, MSGSND, msqid, msgp, msgsz, msgflg)); 112 } 113 114 int 115 msgids(int *buf, uint_t nids, uint_t *pnids) 116 { 117 return (syscall(SYS_msgsys, MSGIDS, buf, nids, pnids)); 118 } 119 120 int 121 msgsnap(int msqid, void *buf, size_t bufsz, long msgtyp) 122 { 123 return (syscall(SYS_msgsys, MSGSNAP, msqid, buf, bufsz, msgtyp)); 124 } 125