1 /* $FreeBSD: src/sys/kern/sysv_ipc.c,v 1.13.2.2 2000/07/01 14:33:49 bsd Exp $ */
2 /* $DragonFly: src/sys/kern/sysv_ipc.c,v 1.6 2003/07/24 20:42:31 dillon Exp $ */
3 /* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */
6 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by Herb Peyerl.
20 * 4. The name of Herb Peyerl may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include "opt_sysvipc.h"
37 #include <sys/param.h>
40 #include <sys/ucred.h>
42 #if defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG)
45 * Check for ipc permission
49 ipcperm(struct proc *p, struct ipc_perm *perm, int mode)
51 struct ucred *cred = p->p_ucred;
53 /* Check for user match. */
54 if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) {
56 return (suser_cred(cred, 0) == 0 ? 0 : EPERM);
57 /* Check for group match. */
59 if (!groupmember(perm->gid, cred) &&
60 !groupmember(perm->cgid, cred))
61 /* Check for `other' match. */
67 return ((mode & perm->mode) == mode ||
68 suser_cred(cred, 0) == 0 ? 0 : EACCES);
71 #endif /* defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) */
74 #if !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG)
79 #include <sys/syslog.h>
80 #include <sys/sysproto.h>
81 #include <sys/systm.h>
83 static void sysv_nosys __P((char *s));
88 struct thread *td = curthread;
89 struct proc *p = td->td_proc;
91 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
92 td->td_comm, (p ? p->p_pid : -1), s);
102 semsys(struct semsys_args *uap)
104 sysv_nosys("SYSVSEM");
105 return nosys((struct nosys_args *)uap);
109 __semctl(struct __semctl_args *uap)
111 sysv_nosys("SYSVSEM");
112 return nosys((struct nosys_args *)uap);
116 semget(struct semget_args *uap)
118 sysv_nosys("SYSVSEM");
119 return nosys((struct nosys_args *)uap);
123 semop(struct semop_args *uap)
125 sysv_nosys("SYSVSEM");
126 return nosys((struct nosys_args *)uap);
129 /* called from kern_exit.c */
131 semexit(struct proc *p)
136 #endif /* !defined(SYSVSEM) */
139 #if !defined(SYSVMSG)
144 * note: msgsys args actually var-args? YYYY
148 msgsys(struct msgsys_args *uap)
150 sysv_nosys("SYSVMSG");
151 return nosys((struct nosys_args *)uap);
155 msgctl(struct msgctl_args *uap)
157 sysv_nosys("SYSVMSG");
158 return nosys((struct nosys_args *)uap);
162 msgget(struct msgget_args *uap)
164 sysv_nosys("SYSVMSG");
165 return nosys((struct nosys_args *)uap);
169 msgsnd(struct msgsnd_args *uap)
171 sysv_nosys("SYSVMSG");
172 return nosys((struct nosys_args *)uap);
176 msgrcv(struct msgrcv_args *uap)
178 sysv_nosys("SYSVMSG");
179 return nosys((struct nosys_args *)uap);
182 #endif /* !defined(SYSVMSG) */
185 #if !defined(SYSVSHM)
192 shmdt(struct shmdt_args *uap)
194 sysv_nosys("SYSVSHM");
195 return nosys((struct nosys_args *)uap);
199 shmat(struct shmat_args *uap)
201 sysv_nosys("SYSVSHM");
202 return nosys((struct nosys_args *)uap);
206 shmctl(struct shmctl_args *uap)
208 sysv_nosys("SYSVSHM");
209 return nosys((struct nosys_args *)uap);
213 shmget(struct shmget_args *uap)
215 sysv_nosys("SYSVSHM");
216 return nosys((struct nosys_args *)uap);
219 /* XXX actually varargs. */
221 shmsys(struct shmsys_args *uap)
223 sysv_nosys("SYSVSHM");
224 return nosys((struct nosys_args *)uap);
227 /* called from kern_fork.c */
229 shmfork(struct proc *p1, struct proc *p2)
234 /* called from kern_exit.c */
236 shmexit(struct vmspace *vm)
241 #endif /* !defined(SYSVSHM) */
243 #endif /* !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) */