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 1.3 2003/06/23 17:55:41 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() == 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 || suser() == 0 ? 0 : EACCES);
70 #endif /* defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) */
73 #if !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG)
78 #include <sys/syslog.h>
79 #include <sys/sysproto.h>
80 #include <sys/systm.h>
82 static void sysv_nosys __P((struct proc *p, char *s));
89 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
90 p->p_comm, p->p_pid, s);
102 struct semsys_args *uap;
104 sysv_nosys(p, "SYSVSEM");
105 return nosys(p, (struct nosys_args *)uap);
111 register struct __semctl_args *uap;
113 sysv_nosys(p, "SYSVSEM");
114 return nosys(p, (struct nosys_args *)uap);
120 register struct semget_args *uap;
122 sysv_nosys(p, "SYSVSEM");
123 return nosys(p, (struct nosys_args *)uap);
129 register struct semop_args *uap;
131 sysv_nosys(p, "SYSVSEM");
132 return nosys(p, (struct nosys_args *)uap);
135 /* called from kern_exit.c */
143 #endif /* !defined(SYSVSEM) */
146 #if !defined(SYSVMSG)
155 /* XXX actually varargs. */
156 struct msgsys_args *uap;
158 sysv_nosys(p, "SYSVMSG");
159 return nosys(p, (struct nosys_args *)uap);
165 register struct msgctl_args *uap;
167 sysv_nosys(p, "SYSVMSG");
168 return nosys(p, (struct nosys_args *)uap);
174 register struct msgget_args *uap;
176 sysv_nosys(p, "SYSVMSG");
177 return nosys(p, (struct nosys_args *)uap);
183 register struct msgsnd_args *uap;
185 sysv_nosys(p, "SYSVMSG");
186 return nosys(p, (struct nosys_args *)uap);
192 register struct msgrcv_args *uap;
194 sysv_nosys(p, "SYSVMSG");
195 return nosys(p, (struct nosys_args *)uap);
198 #endif /* !defined(SYSVMSG) */
201 #if !defined(SYSVSHM)
210 struct shmdt_args *uap;
212 sysv_nosys(p, "SYSVSHM");
213 return nosys(p, (struct nosys_args *)uap);
219 struct shmat_args *uap;
221 sysv_nosys(p, "SYSVSHM");
222 return nosys(p, (struct nosys_args *)uap);
228 struct shmctl_args *uap;
230 sysv_nosys(p, "SYSVSHM");
231 return nosys(p, (struct nosys_args *)uap);
237 struct shmget_args *uap;
239 sysv_nosys(p, "SYSVSHM");
240 return nosys(p, (struct nosys_args *)uap);
246 /* XXX actually varargs. */
247 struct shmsys_args *uap;
249 sysv_nosys(p, "SYSVSHM");
250 return nosys(p, (struct nosys_args *)uap);
253 /* called from kern_fork.c */
256 struct proc *p1, *p2;
261 /* called from kern_exit.c */
269 #endif /* !defined(SYSVSHM) */
271 #endif /* !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) */