1 /* $FreeBSD: src/sys/kern/sysv_ipc.c,v 1.13.2.2 2000/07/01 14:33:49 bsd Exp $ */
2 /* $NetBSD: sysv_ipc.c,v 1.7 1994/06/29 06:33:11 cgd Exp $ */
5 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Herb Peyerl.
19 * 4. The name of Herb Peyerl may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.
34 #include "opt_sysvipc.h"
36 #include <sys/param.h>
40 #include <sys/ucred.h>
42 #define SYSCALL_NOT_PRESENT_GEN(SC, str) \
43 int sys_##SC (struct SC##_args *uap) \
46 return sys_nosys((struct nosys_args *)uap); \
49 #if defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG)
52 * Check for ipc permission
56 ipcperm(struct proc *p, struct ipc_perm *perm, int mode)
58 struct ucred *cred = p->p_ucred;
60 /* Check for user match. */
61 if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) {
63 return (priv_check_cred(cred, PRIV_ROOT, 0) == 0 ? 0 : EPERM);
64 /* Check for group match. */
66 if (!groupmember(perm->gid, cred) &&
67 !groupmember(perm->cgid, cred))
68 /* Check for `other' match. */
74 return ((mode & perm->mode) == mode ||
75 priv_check_cred(cred, PRIV_ROOT, 0) == 0 ? 0 : EACCES);
78 #endif /* defined(SYSVSEM) || defined(SYSVSHM) || defined(SYSVMSG) */
81 #if !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG)
86 #include <sys/syslog.h>
87 #include <sys/sysproto.h>
88 #include <sys/systm.h>
90 static void sysv_nosys (char *s);
95 struct thread *td = curthread;
96 struct proc *p = td->td_proc;
98 log(LOG_ERR, "cmd %s pid %d tried to use non-present %s\n",
99 (p ? p->p_comm : td->td_comm),
100 (p ? p->p_pid : -1), s);
103 #if !defined(SYSVSEM)
109 SYSCALL_NOT_PRESENT_GEN(__semctl, "SYSVSEM");
110 SYSCALL_NOT_PRESENT_GEN(semget, "SYSVSEM");
111 SYSCALL_NOT_PRESENT_GEN(semop, "SYSVSEM");
113 /* called from kern_exit.c */
115 semexit(struct proc *p)
120 #endif /* !defined(SYSVSEM) */
123 #if !defined(SYSVMSG)
129 SYSCALL_NOT_PRESENT_GEN(msgctl, "SYSVMSG");
130 SYSCALL_NOT_PRESENT_GEN(msgget, "SYSVMSG");
131 SYSCALL_NOT_PRESENT_GEN(msgsnd, "SYSVMSG");
132 SYSCALL_NOT_PRESENT_GEN(msgrcv, "SYSVMSG");
134 #endif /* !defined(SYSVMSG) */
137 #if !defined(SYSVSHM)
143 SYSCALL_NOT_PRESENT_GEN(shmdt, "SYSVSHM");
144 SYSCALL_NOT_PRESENT_GEN(shmat, "SYSVSHM");
145 SYSCALL_NOT_PRESENT_GEN(shmctl, "SYSVSHM");
146 SYSCALL_NOT_PRESENT_GEN(shmget, "SYSVSHM");
148 /* called from kern_fork.c */
150 shmfork(struct proc *p1, struct proc *p2)
155 /* called from kern_exit.c */
157 shmexit(struct vmspace *vm)
162 #endif /* !defined(SYSVSHM) */
164 #endif /* !defined(SYSVSEM) || !defined(SYSVSHM) || !defined(SYSVMSG) */