/* $FreeBSD$ */ /* $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 "opt_sysvipc.h" #include <sys/param.h> #include <sys/ipc.h> #include <sys/proc.h> #include <sys/ucred.h> #if defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) /* * Check for ipc permission */ int ipcperm(p, perm, mode) struct proc *p; struct ipc_perm *perm; int mode; { struct ucred *cred = p->p_ucred; /* Check for user match. */ if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) { if (mode & IPC_M) return (suser(p) == 0 ? 0 : 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 || suser(p) == 0 ? 0 : EACCES); } #endif /* defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) */ #if !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) #include <sys/proc.h> #include <sys/sem.h> #include <sys/shm.h> #include <sys/syslog.h> #include <sys/sysproto.h> #include <sys/systm.h> static void sysv_nosys __P((struct proc *p, char *s)); static void sysv_nosys(p, s) struct proc *p; char *s; { log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n", p->p_comm, p->p_pid, s); } #if !defined(SYSVSEM) /* * SYSVSEM stubs */ int semsys(p, uap) struct proc *p; struct semsys_args *uap; { sysv_nosys(p, "SYSVSEM"); return nosys(p, (struct nosys_args *)uap); }; int __semctl(p, uap) struct proc *p; register struct __semctl_args *uap; { sysv_nosys(p, "SYSVSEM"); return nosys(p, (struct nosys_args *)uap); }; int semget(p, uap) struct proc *p; register struct semget_args *uap; { sysv_nosys(p, "SYSVSEM"); return nosys(p, (struct nosys_args *)uap); }; int semop(p, uap) struct proc *p; register struct semop_args *uap; { sysv_nosys(p, "SYSVSEM"); return nosys(p, (struct nosys_args *)uap); }; /* called from kern_exit.c */ void semexit(p) struct proc *p; { return; } #endif /* !defined(SYSVSEM) */ #if !defined(SYSVMSG) /* * SYSVMSG stubs */ int msgsys(p, uap) struct proc *p; /* XXX actually varargs. */ struct msgsys_args *uap; { sysv_nosys(p, "SYSVMSG"); return nosys(p, (struct nosys_args *)uap); }; int msgctl(p, uap) struct proc *p; register struct msgctl_args *uap; { sysv_nosys(p, "SYSVMSG"); return nosys(p, (struct nosys_args *)uap); }; int msgget(p, uap) struct proc *p; register struct msgget_args *uap; { sysv_nosys(p, "SYSVMSG"); return nosys(p, (struct nosys_args *)uap); }; int msgsnd(p, uap) struct proc *p; register struct msgsnd_args *uap; { sysv_nosys(p, "SYSVMSG"); return nosys(p, (struct nosys_args *)uap); }; int msgrcv(p, uap) struct proc *p; register struct msgrcv_args *uap; { sysv_nosys(p, "SYSVMSG"); return nosys(p, (struct nosys_args *)uap); }; #endif /* !defined(SYSVMSG) */ #if !defined(SYSVSHM) /* * SYSVSHM stubs */ int shmdt(p, uap) struct proc *p; struct shmdt_args *uap; { sysv_nosys(p, "SYSVSHM"); return nosys(p, (struct nosys_args *)uap); }; int shmat(p, uap) struct proc *p; struct shmat_args *uap; { sysv_nosys(p, "SYSVSHM"); return nosys(p, (struct nosys_args *)uap); }; int shmctl(p, uap) struct proc *p; struct shmctl_args *uap; { sysv_nosys(p, "SYSVSHM"); return nosys(p, (struct nosys_args *)uap); }; int shmget(p, uap) struct proc *p; struct shmget_args *uap; { sysv_nosys(p, "SYSVSHM"); return nosys(p, (struct nosys_args *)uap); }; int shmsys(p, uap) struct proc *p; /* XXX actually varargs. */ struct shmsys_args *uap; { sysv_nosys(p, "SYSVSHM"); return nosys(p, (struct nosys_args *)uap); }; /* called from kern_fork.c */ void shmfork(p1, p2) struct proc *p1, *p2; { return; } /* called from kern_exit.c */ void shmexit(p) struct proc *p; { return; } #endif /* !defined(SYSVSHM) */ #endif /* !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) */