sysv_ipc.c (cf9fa8e72541441be08abdd3a8475449da7d7995) sysv_ipc.c (78525ce3185cb7196d629f4b1ec2fa2a5039129b)
1/* $FreeBSD$ */
2/* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */
3
4/*
5 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include "opt_sysvipc.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
1/* $FreeBSD$ */
2/* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */
3
4/*
5 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include "opt_sysvipc.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/sem.h>
39#include <sys/shm.h>
38#include <sys/ipc.h>
39#include <sys/proc.h>
40#include <sys/ucred.h>
41
40#include <sys/ipc.h>
41#include <sys/proc.h>
42#include <sys/ucred.h>
43
42#if defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG)
44void (*semexit_hook)(struct proc *) = NULL;
45void (*shmfork_hook)(struct proc *, struct proc *) = NULL;
46void (*shmexit_hook)(struct proc *) = NULL;
43
47
48/* called from kern_exit.c */
49void
50semexit(p)
51 struct proc *p;
52{
53
54 if (semexit_hook != NULL)
55 semexit_hook(p);
56 return;
57}
58
59/* called from kern_fork.c */
60void
61shmfork(p1, p2)
62 struct proc *p1, *p2;
63{
64
65 if (shmfork_hook != NULL)
66 shmfork_hook(p1, p2);
67 return;
68}
69
70/* called from kern_exit.c */
71void
72shmexit(p)
73 struct proc *p;
74{
75
76 if (shmexit_hook != NULL)
77 shmexit_hook(p);
78 return;
79}
80
44/*
45 * Check for ipc permission
46 */
47
48int
49ipcperm(p, perm, mode)
50 struct proc *p;
51 struct ipc_perm *perm;

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64 /* Check for `other' match. */
65 mode >>= 3;
66 }
67
68 if (mode & IPC_M)
69 return (0);
70 return ((mode & perm->mode) == mode || suser(p) == 0 ? 0 : EACCES);
71}
81/*
82 * Check for ipc permission
83 */
84
85int
86ipcperm(p, perm, mode)
87 struct proc *p;
88 struct ipc_perm *perm;

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101 /* Check for `other' match. */
102 mode >>= 3;
103 }
104
105 if (mode & IPC_M)
106 return (0);
107 return ((mode & perm->mode) == mode || suser(p) == 0 ? 0 : EACCES);
108}
72
73#endif /* defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) */
74
75
76#if !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG)
77
78#include <sys/proc.h>
79#include <sys/sem.h>
80#include <sys/shm.h>
81#include <sys/syslog.h>
82#include <sys/sysproto.h>
83#include <sys/systm.h>
84
85static void sysv_nosys __P((struct proc *p, char *s));
86
87static void
88sysv_nosys(p, s)
89 struct proc *p;
90 char *s;
91{
92 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
93 p->p_comm, p->p_pid, s);
94}
95
96#if !defined(SYSVSEM)
97
98/*
99 * SYSVSEM stubs
100 */
101
102int
103semsys(p, uap)
104 struct proc *p;
105 struct semsys_args *uap;
106{
107 sysv_nosys(p, "SYSVSEM");
108 return nosys(p, (struct nosys_args *)uap);
109};
110
111int
112__semctl(p, uap)
113 struct proc *p;
114 register struct __semctl_args *uap;
115{
116 sysv_nosys(p, "SYSVSEM");
117 return nosys(p, (struct nosys_args *)uap);
118};
119
120int
121semget(p, uap)
122 struct proc *p;
123 register struct semget_args *uap;
124{
125 sysv_nosys(p, "SYSVSEM");
126 return nosys(p, (struct nosys_args *)uap);
127};
128
129int
130semop(p, uap)
131 struct proc *p;
132 register struct semop_args *uap;
133{
134 sysv_nosys(p, "SYSVSEM");
135 return nosys(p, (struct nosys_args *)uap);
136};
137
138/* called from kern_exit.c */
139void
140semexit(p)
141 struct proc *p;
142{
143 return;
144}
145
146#endif /* !defined(SYSVSEM) */
147
148
149#if !defined(SYSVMSG)
150
151/*
152 * SYSVMSG stubs
153 */
154
155int
156msgsys(p, uap)
157 struct proc *p;
158 /* XXX actually varargs. */
159 struct msgsys_args *uap;
160{
161 sysv_nosys(p, "SYSVMSG");
162 return nosys(p, (struct nosys_args *)uap);
163};
164
165int
166msgctl(p, uap)
167 struct proc *p;
168 register struct msgctl_args *uap;
169{
170 sysv_nosys(p, "SYSVMSG");
171 return nosys(p, (struct nosys_args *)uap);
172};
173
174int
175msgget(p, uap)
176 struct proc *p;
177 register struct msgget_args *uap;
178{
179 sysv_nosys(p, "SYSVMSG");
180 return nosys(p, (struct nosys_args *)uap);
181};
182
183int
184msgsnd(p, uap)
185 struct proc *p;
186 register struct msgsnd_args *uap;
187{
188 sysv_nosys(p, "SYSVMSG");
189 return nosys(p, (struct nosys_args *)uap);
190};
191
192int
193msgrcv(p, uap)
194 struct proc *p;
195 register struct msgrcv_args *uap;
196{
197 sysv_nosys(p, "SYSVMSG");
198 return nosys(p, (struct nosys_args *)uap);
199};
200
201#endif /* !defined(SYSVMSG) */
202
203
204#if !defined(SYSVSHM)
205
206/*
207 * SYSVSHM stubs
208 */
209
210int
211shmdt(p, uap)
212 struct proc *p;
213 struct shmdt_args *uap;
214{
215 sysv_nosys(p, "SYSVSHM");
216 return nosys(p, (struct nosys_args *)uap);
217};
218
219int
220shmat(p, uap)
221 struct proc *p;
222 struct shmat_args *uap;
223{
224 sysv_nosys(p, "SYSVSHM");
225 return nosys(p, (struct nosys_args *)uap);
226};
227
228int
229shmctl(p, uap)
230 struct proc *p;
231 struct shmctl_args *uap;
232{
233 sysv_nosys(p, "SYSVSHM");
234 return nosys(p, (struct nosys_args *)uap);
235};
236
237int
238shmget(p, uap)
239 struct proc *p;
240 struct shmget_args *uap;
241{
242 sysv_nosys(p, "SYSVSHM");
243 return nosys(p, (struct nosys_args *)uap);
244};
245
246int
247shmsys(p, uap)
248 struct proc *p;
249 /* XXX actually varargs. */
250 struct shmsys_args *uap;
251{
252 sysv_nosys(p, "SYSVSHM");
253 return nosys(p, (struct nosys_args *)uap);
254};
255
256/* called from kern_fork.c */
257void
258shmfork(p1, p2)
259 struct proc *p1, *p2;
260{
261 return;
262}
263
264/* called from kern_exit.c */
265void
266shmexit(p)
267 struct proc *p;
268{
269 return;
270}
271
272#endif /* !defined(SYSVSHM) */
273
274#endif /* !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) */