/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */ /* * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Herb Peyerl. * 4. The name of Herb Peyerl may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/param.h> #include <sys/ipc.h> #include <sys/ucred.h> /* * Check for ipc permission * * XXX: Should pass proc argument so that we can pass * XXX: proc->p_acflag to suser() */ int ipcperm(cred, perm, mode) struct ucred *cred; struct ipc_perm *perm; int mode; { if (!suser(cred, (u_short *)NULL)) return (0); /* Check for user match. */ if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) { if (mode & IPC_M) return (EPERM); /* Check for group match. */ mode >>= 3; if (!groupmember(perm->gid, cred) && !groupmember(perm->cgid, cred)) /* Check for `other' match. */ mode >>= 3; } if (mode & IPC_M) return (0); return ((mode & perm->mode) == mode ? 0 : EACCES); } /* * SYSVMSG stubs */ int msgsys(p, uap) struct proc *p; /* XXX actually varargs. */ #if 0 struct msgsys_args *uap; #else void *uap; #endif { return(EOPNOTSUPP); }; int msgctl(p, uap) struct proc *p; #if 0 register struct msgctl_args *uap; #else void *uap; #endif { return(EOPNOTSUPP); }; int msgget(p, uap) struct proc *p; #if 0 register struct msgget_args *uap; #else void *uap; #endif { return(EOPNOTSUPP); }; int msgsnd(p, uap) struct proc *p; #if 0 register struct msgsnd_args *uap; #else void *uap; #endif { return(EOPNOTSUPP); }; int msgrcv(p, uap) struct proc *p; #if 0 register struct msgrcv_args *uap; #else void *uap; #endif { return(EOPNOTSUPP); };