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 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #pragma weak _msgctl = msgctl 33 #pragma weak _msgget = msgget 34 #pragma weak _msgids = msgids 35 #pragma weak _msgsnap = msgsnap 36 37 #include "lint.h" 38 #include <sys/types.h> 39 #include <sys/ipc.h> 40 #include <sys/ipc_impl.h> 41 #include <sys/msg.h> 42 #include <sys/msg_impl.h> 43 #include <sys/syscall.h> 44 #include <errno.h> 45 #include <limits.h> 46 47 int 48 msgget(key_t key, int msgflg) 49 { 50 return (syscall(SYS_msgsys, MSGGET, key, msgflg)); 51 } 52 53 int 54 msgctl(int msqid, int cmd, struct msqid_ds *buf) 55 { 56 if (cmd == IPC_SET64 || cmd == IPC_STAT64) { 57 (void) __set_errno(EINVAL); 58 return (-1); 59 } 60 61 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 62 } 63 64 int 65 msgctl64(int msqid, int cmd, struct msqid_ds64 *buf) 66 { 67 if (cmd != IPC_SET64 && cmd != IPC_STAT64) { 68 (void) __set_errno(EINVAL); 69 return (-1); 70 } 71 72 return (syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf)); 73 } 74 75 ssize_t 76 __msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg) 77 { 78 if (msgsz > INT_MAX) { 79 sysret_t rval; 80 int error; 81 82 /* 83 * We have to use __systemcall here because in the 84 * 64-bit case, we need to return a long, while 85 * syscall() is doomed to return an int 86 */ 87 error = __systemcall(&rval, SYS_msgsys, MSGRCV, msqid, 88 msgp, msgsz, msgtyp, msgflg); 89 if (error) 90 (void) __set_errno(error); 91 return ((ssize_t)rval.sys_rval1); 92 } 93 return ((ssize_t)syscall(SYS_msgsys, MSGRCV, msqid, 94 msgp, msgsz, msgtyp, msgflg)); 95 } 96 97 int 98 __msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg) 99 { 100 if (msgsz > INT_MAX) { 101 sysret_t rval; 102 int error; 103 104 error = __systemcall(&rval, SYS_msgsys, MSGSND, msqid, 105 msgp, msgsz, msgflg); 106 if (error) 107 (void) __set_errno(error); 108 return ((int)rval.sys_rval1); 109 } 110 return (syscall(SYS_msgsys, MSGSND, msqid, msgp, msgsz, msgflg)); 111 } 112 113 int 114 msgids(int *buf, uint_t nids, uint_t *pnids) 115 { 116 return (syscall(SYS_msgsys, MSGIDS, buf, nids, pnids)); 117 } 118 119 int 120 msgsnap(int msqid, void *buf, size_t bufsz, long msgtyp) 121 { 122 return (syscall(SYS_msgsys, MSGSNAP, msqid, buf, bufsz, msgtyp)); 123 } 124