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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */
23:
24: /*
25: * Copyright (c) 1994 Herb Peyerl <[email protected]>
26: * All rights reserved.
27: *
28: * Redistribution and use in source and binary forms, with or without
29: * modification, are permitted provided that the following conditions
30: * are met:
31: * 1. Redistributions of source code must retain the above copyright
32: * notice, this list of conditions and the following disclaimer.
33: * 2. Redistributions in binary form must reproduce the above copyright
34: * notice, this list of conditions and the following disclaimer in the
35: * documentation and/or other materials provided with the distribution.
36: * 3. All advertising materials mentioning features or use of this software
37: * must display the following acknowledgement:
38: * This product includes software developed by Herb Peyerl.
39: * 4. The name of Herb Peyerl may not be used to endorse or promote products
40: * derived from this software without specific prior written permission.
41: *
42: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
43: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
44: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
45: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
46: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
48: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
49: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
50: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
51: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52: */
53:
54:
55: #include <sys/param.h>
56: #include <sys/ipc.h>
57: #include <sys/ucred.h>
58:
59:
60: /*
61: * Check for ipc permission
62: *
63: * XXX: Should pass proc argument so that we can pass
64: * XXX: proc->p_acflag to suser()
65: */
66:
67: int
68: ipcperm(cred, perm, mode)
69: struct ucred *cred;
70: struct ipc_perm *perm;
71: int mode;
72: {
73:
74: if (suser(cred, (u_short *)NULL))
75: return (0);
76:
77: /* Check for user match. */
78: if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) {
79: if (mode & IPC_M)
80: return (EPERM);
81: /* Check for group match. */
82: mode >>= 3;
83: if (!groupmember(perm->gid, cred) &&
84: !groupmember(perm->cgid, cred))
85: /* Check for `other' match. */
86: mode >>= 3;
87: }
88:
89: if (mode & IPC_M)
90: return (0);
91: return ((mode & perm->mode) == mode ? 0 : EACCES);
92: }
93:
94:
95:
96:
97: /*
98: * SYSVSEM stubs
99: */
100:
101: int
102: semsys(p, uap)
103: struct proc *p;
104: #if 0
105: struct semsys_args *uap;
106: #else
107: void *uap;
108: #endif
109: {
110: return(EOPNOTSUPP);
111: };
112:
113: int
114: semconfig(p, uap)
115: struct proc *p;
116: #if 0
117: struct semconfig_args *uap;
118: #else
119: void *uap;
120: #endif
121: {
122: return(EOPNOTSUPP);
123: };
124:
125: int
126: semctl(p, uap)
127: struct proc *p;
128: #if 0
129: register struct semctl_args *uap;
130: #else
131: void *uap;
132: #endif
133: {
134: return(EOPNOTSUPP);
135: };
136:
137: int
138: semget(p, uap)
139: struct proc *p;
140: #if 0
141: register struct semget_args *uap;
142: #else
143: void *uap;
144: #endif
145: {
146: return(EOPNOTSUPP);
147: };
148:
149: int
150: semop(p, uap)
151: struct proc *p;
152: #if 0
153: register struct semop_args *uap;
154: #else
155: void *uap;
156: #endif
157: {
158: return(EOPNOTSUPP);
159: };
160:
161: /* called from kern_exit.c */
162: void
163: semexit(p)
164: struct proc *p;
165: {
166: return;
167: }
168:
169:
170:
171:
172: /*
173: * SYSVMSG stubs
174: */
175:
176: int
177: msgsys(p, uap)
178: struct proc *p;
179: /* XXX actually varargs. */
180: #if 0
181: struct msgsys_args *uap;
182: #else
183: void *uap;
184: #endif
185: {
186: return(EOPNOTSUPP);
187: };
188:
189: int
190: msgctl(p, uap)
191: struct proc *p;
192: #if 0
193: register struct msgctl_args *uap;
194: #else
195: void *uap;
196: #endif
197: {
198: return(EOPNOTSUPP);
199: };
200:
201: int
202: msgget(p, uap)
203: struct proc *p;
204: #if 0
205: register struct msgget_args *uap;
206: #else
207: void *uap;
208: #endif
209: {
210: return(EOPNOTSUPP);
211: };
212:
213: int
214: msgsnd(p, uap)
215: struct proc *p;
216: #if 0
217: register struct msgsnd_args *uap;
218: #else
219: void *uap;
220: #endif
221: {
222: return(EOPNOTSUPP);
223: };
224:
225: int
226: msgrcv(p, uap)
227: struct proc *p;
228: #if 0
229: register struct msgrcv_args *uap;
230: #else
231: void *uap;
232: #endif
233: {
234: return(EOPNOTSUPP);
235: };
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