b648d4806b
- The uid/cuid members of struct ipc_perm are now uid_t instead of unsigned short. - The gid/cgid members of struct ipc_perm are now gid_t instead of unsigned short. - The mode member of struct ipc_perm is now mode_t instead of unsigned short (this is merely a style bug). - The rather dubious padding fields for ABI compat with SV/I386 have been removed from struct msqid_ds and struct semid_ds. - The shm_segsz member of struct shmid_ds is now a size_t instead of an int. This removes the need for the shm_bsegsz member in struct shmid_kernel and should allow for complete support of SYSV SHM regions >= 2GB. - The shm_nattch member of struct shmid_ds is now an int instead of a short. - The shm_internal member of struct shmid_ds is now gone. The internal VM object pointer for SHM regions has been moved into struct shmid_kernel. - The existing __semctl(), msgctl(), and shmctl() system call entries are now marked COMPAT7 and new versions of those system calls which support the new ABI are now present. - The new system calls are assigned to the FBSD-1.1 version in libc. The FBSD-1.0 symbols in libc now refer to the old COMPAT7 system calls. - A simplistic framework for tagging system calls with compatibility symbol versions has been added to libc. Version tags are added to system calls by adding an appropriate __sym_compat() entry to src/lib/libc/incldue/compat.h. [1] PR: kern/16195 kern/113218 bin/129855 Reviewed by: arch@, rwatson Discussed with: kan, kib [1]
708 lines
16 KiB
C
708 lines
16 KiB
C
/*-
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* Copyright (c) 1995 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Portions of this code have been derived from software contributed
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* to the FreeBSD Project by Mark Newton.
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*
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* Copyright (c) 1999 Mark Newton
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* XXX- This code is presently a no-op on FreeBSD (and isn't compiled due
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* to preprocessor conditionals). A nice project for a kernel hacking
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* novice might be to MakeItGo, but I have more important fish to fry
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* at present.
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*
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* Derived from: $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_sysvipc.h"
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#include <sys/param.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include <sys/proc.h>
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#include <sys/sem.h>
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#include <sys/shm.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysproto.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <compat/svr4/svr4.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_signal.h>
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#include <compat/svr4/svr4_proto.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_ipc.h>
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#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
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static void svr4_to_bsd_ipc_perm(const struct svr4_ipc_perm *,
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struct ipc_perm *);
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static void bsd_to_svr4_ipc_perm(const struct ipc_perm *,
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struct svr4_ipc_perm *);
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#endif
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#ifdef SYSVSEM
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static void bsd_to_svr4_semid_ds(const struct semid_ds *,
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struct svr4_semid_ds *);
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static void svr4_to_bsd_semid_ds(const struct svr4_semid_ds *,
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struct semid_ds *);
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static int svr4_semop(struct thread *, void *);
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static int svr4_semget(struct thread *, void *);
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static int svr4_semctl(struct thread *, void *);
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#endif
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#ifdef SYSVMSG
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static void bsd_to_svr4_msqid_ds(const struct msqid_ds *,
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struct svr4_msqid_ds *);
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static void svr4_to_bsd_msqid_ds(const struct svr4_msqid_ds *,
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struct msqid_ds *);
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static int svr4_msgsnd(struct thread *, void *);
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static int svr4_msgrcv(struct thread *, void *);
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static int svr4_msgget(struct thread *, void *);
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static int svr4_msgctl(struct thread *, void *);
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#endif
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#ifdef SYSVSHM
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static void bsd_to_svr4_shmid_ds(const struct shmid_ds *,
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struct svr4_shmid_ds *);
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static void svr4_to_bsd_shmid_ds(const struct svr4_shmid_ds *,
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struct shmid_ds *);
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static int svr4_shmat(struct thread *, void *);
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static int svr4_shmdt(struct thread *, void *);
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static int svr4_shmget(struct thread *, void *);
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static int svr4_shmctl(struct thread *, void *);
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#endif
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#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
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static void
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svr4_to_bsd_ipc_perm(spp, bpp)
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const struct svr4_ipc_perm *spp;
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struct ipc_perm *bpp;
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{
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bpp->key = spp->key;
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bpp->uid = spp->uid;
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bpp->gid = spp->gid;
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bpp->cuid = spp->cuid;
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bpp->cgid = spp->cgid;
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bpp->mode = spp->mode;
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bpp->seq = spp->seq;
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}
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static void
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bsd_to_svr4_ipc_perm(bpp, spp)
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const struct ipc_perm *bpp;
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struct svr4_ipc_perm *spp;
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{
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spp->key = bpp->key;
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spp->uid = bpp->uid;
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spp->gid = bpp->gid;
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spp->cuid = bpp->cuid;
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spp->cgid = bpp->cgid;
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spp->mode = bpp->mode;
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spp->seq = bpp->seq;
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}
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#endif
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#ifdef SYSVSEM
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static void
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bsd_to_svr4_semid_ds(bds, sds)
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const struct semid_ds *bds;
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struct svr4_semid_ds *sds;
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{
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bzero(sds, sizeof(*sds));
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bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm);
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sds->sem_base = (struct svr4_sem *) bds->sem_base;
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sds->sem_nsems = bds->sem_nsems;
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sds->sem_otime = bds->sem_otime;
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sds->sem_ctime = bds->sem_ctime;
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}
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static void
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svr4_to_bsd_semid_ds(sds, bds)
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const struct svr4_semid_ds *sds;
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struct semid_ds *bds;
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{
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svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm);
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bds->sem_base = (struct sem *) bds->sem_base;
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bds->sem_nsems = sds->sem_nsems;
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bds->sem_otime = sds->sem_otime;
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bds->sem_ctime = sds->sem_ctime;
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}
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struct svr4_sys_semctl_args {
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int what;
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int semid;
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int semnum;
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int cmd;
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union semun arg;
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};
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static int
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svr4_semctl(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_semctl_args *uap = v;
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struct svr4_semid_ds ss;
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struct semid_ds bs;
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union semun semun;
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register_t rval;
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int cmd, error;
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switch (uap->cmd) {
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case SVR4_SEM_GETZCNT:
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cmd = GETZCNT;
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break;
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case SVR4_SEM_GETNCNT:
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cmd = GETNCNT;
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break;
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case SVR4_SEM_GETPID:
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cmd = GETPID;
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break;
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case SVR4_SEM_GETVAL:
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cmd = GETVAL;
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break;
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case SVR4_SEM_SETVAL:
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cmd = SETVAL;
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break;
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case SVR4_SEM_GETALL:
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cmd = GETVAL;
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break;
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case SVR4_SEM_SETALL:
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cmd = SETVAL;
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break;
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case SVR4_IPC_STAT:
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cmd = IPC_STAT;
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semun.buf = &bs;
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error = kern_semctl(td, uap->semid, uap->semnum, cmd, &semun,
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&rval);
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if (error)
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return (error);
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bsd_to_svr4_semid_ds(&bs, &ss);
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error = copyout(&ss, uap->arg.buf, sizeof(ss));
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if (error == 0)
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td->td_retval[0] = rval;
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return (error);
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case SVR4_IPC_SET:
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cmd = IPC_SET;
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error = copyin(uap->arg.buf, (caddr_t) &ss, sizeof ss);
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if (error)
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return (error);
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svr4_to_bsd_semid_ds(&ss, &bs);
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semun.buf = &bs;
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return (kern_semctl(td, uap->semid, uap->semnum, cmd, &semun,
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td->td_retval));
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case SVR4_IPC_RMID:
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cmd = IPC_RMID;
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break;
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default:
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return EINVAL;
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}
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return (kern_semctl(td, uap->semid, uap->semnum, cmd, &uap->arg,
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td->td_retval));
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}
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struct svr4_sys_semget_args {
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int what;
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svr4_key_t key;
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int nsems;
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int semflg;
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};
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static int
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svr4_semget(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_semget_args *uap = v;
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struct semget_args ap;
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ap.key = uap->key;
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ap.nsems = uap->nsems;
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ap.semflg = uap->semflg;
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return semget(td, &ap);
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}
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struct svr4_sys_semop_args {
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int what;
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int semid;
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struct svr4_sembuf * sops;
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u_int nsops;
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};
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static int
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svr4_semop(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_semop_args *uap = v;
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struct semop_args ap;
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ap.semid = uap->semid;
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/* These are the same */
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ap.sops = (struct sembuf *) uap->sops;
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ap.nsops = uap->nsops;
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return semop(td, &ap);
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}
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int
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svr4_sys_semsys(td, uap)
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struct thread *td;
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struct svr4_sys_semsys_args *uap;
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{
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DPRINTF(("svr4_semsys(%d)\n", uap->what));
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switch (uap->what) {
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case SVR4_semctl:
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return svr4_semctl(td, uap);
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case SVR4_semget:
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return svr4_semget(td, uap);
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case SVR4_semop:
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return svr4_semop(td, uap);
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default:
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return EINVAL;
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}
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}
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MODULE_DEPEND(svr4elf, sysvsem, 1, 1, 1);
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#endif
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#ifdef SYSVMSG
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static void
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bsd_to_svr4_msqid_ds(bds, sds)
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const struct msqid_ds *bds;
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struct svr4_msqid_ds *sds;
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{
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bzero(sds, sizeof(*sds));
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bsd_to_svr4_ipc_perm(&bds->msg_perm, &sds->msg_perm);
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sds->msg_first = (struct svr4_msg *) bds->msg_first;
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sds->msg_last = (struct svr4_msg *) bds->msg_last;
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sds->msg_cbytes = bds->msg_cbytes;
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sds->msg_qnum = bds->msg_qnum;
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sds->msg_qbytes = bds->msg_qbytes;
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sds->msg_lspid = bds->msg_lspid;
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sds->msg_lrpid = bds->msg_lrpid;
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sds->msg_stime = bds->msg_stime;
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sds->msg_rtime = bds->msg_rtime;
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sds->msg_ctime = bds->msg_ctime;
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}
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static void
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svr4_to_bsd_msqid_ds(sds, bds)
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const struct svr4_msqid_ds *sds;
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struct msqid_ds *bds;
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{
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svr4_to_bsd_ipc_perm(&sds->msg_perm, &bds->msg_perm);
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bds->msg_first = (struct msg *) sds->msg_first;
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bds->msg_last = (struct msg *) sds->msg_last;
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bds->msg_cbytes = sds->msg_cbytes;
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bds->msg_qnum = sds->msg_qnum;
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bds->msg_qbytes = sds->msg_qbytes;
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bds->msg_lspid = sds->msg_lspid;
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bds->msg_lrpid = sds->msg_lrpid;
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bds->msg_stime = sds->msg_stime;
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bds->msg_rtime = sds->msg_rtime;
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bds->msg_ctime = sds->msg_ctime;
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}
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struct svr4_sys_msgsnd_args {
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int what;
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int msqid;
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void * msgp;
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size_t msgsz;
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int msgflg;
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};
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static int
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svr4_msgsnd(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_msgsnd_args *uap = v;
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struct msgsnd_args ap;
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ap.msqid = uap->msqid;
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ap.msgp = uap->msgp;
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ap.msgsz = uap->msgsz;
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ap.msgflg = uap->msgflg;
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return msgsnd(td, &ap);
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}
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struct svr4_sys_msgrcv_args {
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int what;
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int msqid;
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void * msgp;
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size_t msgsz;
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long msgtyp;
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int msgflg;
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};
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static int
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svr4_msgrcv(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_msgrcv_args *uap = v;
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struct msgrcv_args ap;
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ap.msqid = uap->msqid;
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ap.msgp = uap->msgp;
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ap.msgsz = uap->msgsz;
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ap.msgtyp = uap->msgtyp;
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ap.msgflg = uap->msgflg;
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return msgrcv(td, &ap);
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}
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struct svr4_sys_msgget_args {
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int what;
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svr4_key_t key;
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int msgflg;
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};
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static int
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svr4_msgget(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_msgget_args *uap = v;
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struct msgget_args ap;
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ap.key = uap->key;
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ap.msgflg = uap->msgflg;
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return msgget(td, &ap);
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}
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struct svr4_sys_msgctl_args {
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int what;
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int msqid;
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int cmd;
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struct svr4_msqid_ds * buf;
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};
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static int
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svr4_msgctl(td, v)
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struct thread *td;
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void *v;
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{
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struct svr4_sys_msgctl_args *uap = v;
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struct svr4_msqid_ds ss;
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struct msqid_ds bs;
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int error;
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switch (uap->cmd) {
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case SVR4_IPC_STAT:
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error = kern_msgctl(td, uap->msqid, IPC_STAT, &bs);
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if (error)
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return error;
|
|
bsd_to_svr4_msqid_ds(&bs, &ss);
|
|
return copyout(&ss, uap->buf, sizeof ss);
|
|
|
|
case SVR4_IPC_SET:
|
|
error = copyin(uap->buf, &ss, sizeof ss);
|
|
if (error)
|
|
return error;
|
|
svr4_to_bsd_msqid_ds(&ss, &bs);
|
|
return (kern_msgctl(td, uap->msqid, IPC_SET, &bs));
|
|
|
|
case SVR4_IPC_RMID:
|
|
return (kern_msgctl(td, uap->msqid, IPC_RMID, NULL));
|
|
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
int
|
|
svr4_sys_msgsys(td, uap)
|
|
struct thread *td;
|
|
struct svr4_sys_msgsys_args *uap;
|
|
{
|
|
|
|
DPRINTF(("svr4_msgsys(%d)\n", uap->what));
|
|
|
|
switch (uap->what) {
|
|
case SVR4_msgsnd:
|
|
return svr4_msgsnd(td, uap);
|
|
case SVR4_msgrcv:
|
|
return svr4_msgrcv(td, uap);
|
|
case SVR4_msgget:
|
|
return svr4_msgget(td, uap);
|
|
case SVR4_msgctl:
|
|
return svr4_msgctl(td, uap);
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
MODULE_DEPEND(svr4elf, sysvmsg, 1, 1, 1);
|
|
#endif
|
|
|
|
#ifdef SYSVSHM
|
|
|
|
static void
|
|
bsd_to_svr4_shmid_ds(bds, sds)
|
|
const struct shmid_ds *bds;
|
|
struct svr4_shmid_ds *sds;
|
|
{
|
|
bzero(sds, sizeof(*sds));
|
|
bsd_to_svr4_ipc_perm(&bds->shm_perm, &sds->shm_perm);
|
|
sds->shm_segsz = bds->shm_segsz;
|
|
sds->shm_lkcnt = 0;
|
|
sds->shm_lpid = bds->shm_lpid;
|
|
sds->shm_cpid = bds->shm_cpid;
|
|
sds->shm_amp = 0;
|
|
sds->shm_nattch = bds->shm_nattch;
|
|
sds->shm_cnattch = 0;
|
|
sds->shm_atime = bds->shm_atime;
|
|
sds->shm_dtime = bds->shm_dtime;
|
|
sds->shm_ctime = bds->shm_ctime;
|
|
}
|
|
|
|
static void
|
|
svr4_to_bsd_shmid_ds(sds, bds)
|
|
const struct svr4_shmid_ds *sds;
|
|
struct shmid_ds *bds;
|
|
{
|
|
svr4_to_bsd_ipc_perm(&sds->shm_perm, &bds->shm_perm);
|
|
bds->shm_segsz = sds->shm_segsz;
|
|
bds->shm_lpid = sds->shm_lpid;
|
|
bds->shm_cpid = sds->shm_cpid;
|
|
bds->shm_nattch = sds->shm_nattch;
|
|
bds->shm_atime = sds->shm_atime;
|
|
bds->shm_dtime = sds->shm_dtime;
|
|
bds->shm_ctime = sds->shm_ctime;
|
|
}
|
|
|
|
struct svr4_sys_shmat_args {
|
|
int what;
|
|
int shmid;
|
|
void * shmaddr;
|
|
int shmflg;
|
|
};
|
|
|
|
static int
|
|
svr4_shmat(td, v)
|
|
struct thread *td;
|
|
void *v;
|
|
{
|
|
struct svr4_sys_shmat_args *uap = v;
|
|
struct shmat_args ap;
|
|
|
|
ap.shmid = uap->shmid;
|
|
ap.shmaddr = uap->shmaddr;
|
|
ap.shmflg = uap->shmflg;
|
|
|
|
return shmat(td, &ap);
|
|
}
|
|
|
|
struct svr4_sys_shmdt_args {
|
|
int what;
|
|
void * shmaddr;
|
|
};
|
|
|
|
static int
|
|
svr4_shmdt(td, v)
|
|
struct thread *td;
|
|
void *v;
|
|
{
|
|
struct svr4_sys_shmdt_args *uap = v;
|
|
struct shmdt_args ap;
|
|
|
|
ap.shmaddr = uap->shmaddr;
|
|
|
|
return shmdt(td, &ap);
|
|
}
|
|
|
|
struct svr4_sys_shmget_args {
|
|
int what;
|
|
key_t key;
|
|
int size;
|
|
int shmflg;
|
|
};
|
|
|
|
static int
|
|
svr4_shmget(td, v)
|
|
struct thread *td;
|
|
void *v;
|
|
{
|
|
struct svr4_sys_shmget_args *uap = v;
|
|
struct shmget_args ap;
|
|
|
|
ap.key = uap->key;
|
|
ap.size = uap->size;
|
|
ap.shmflg = uap->shmflg;
|
|
|
|
return shmget(td, &ap);
|
|
}
|
|
|
|
struct svr4_sys_shmctl_args {
|
|
int what;
|
|
int shmid;
|
|
int cmd;
|
|
struct svr4_shmid_ds * buf;
|
|
};
|
|
|
|
int
|
|
svr4_shmctl(td, v)
|
|
struct thread *td;
|
|
void *v;
|
|
{
|
|
struct svr4_sys_shmctl_args *uap = v;
|
|
struct shmid_ds bs;
|
|
struct svr4_shmid_ds ss;
|
|
size_t bufsize;
|
|
int cmd, error;
|
|
|
|
if (uap->buf != NULL) {
|
|
switch (uap->cmd) {
|
|
case SVR4_IPC_SET:
|
|
case SVR4_SHM_LOCK:
|
|
case SVR4_SHM_UNLOCK:
|
|
error = copyin(uap->buf, &ss, sizeof(ss));
|
|
if (error)
|
|
return (error);
|
|
svr4_to_bsd_shmid_ds(&ss, &bs);
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
switch (uap->cmd) {
|
|
case SVR4_IPC_STAT:
|
|
cmd = IPC_STAT;
|
|
break;
|
|
case SVR4_IPC_SET:
|
|
cmd = IPC_SET;
|
|
break;
|
|
case SVR4_IPC_RMID:
|
|
cmd = IPC_RMID;
|
|
break;
|
|
case SVR4_SHM_LOCK:
|
|
cmd = SHM_LOCK;
|
|
break;
|
|
case SVR4_SHM_UNLOCK:
|
|
cmd = SHM_UNLOCK;
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
|
|
error = kern_shmctl(td, uap->shmid, cmd, &bs, &bufsize);
|
|
if (error)
|
|
return (error);
|
|
|
|
switch (uap->cmd) {
|
|
case SVR4_IPC_STAT:
|
|
if (uap->buf != NULL) {
|
|
bsd_to_svr4_shmid_ds(&bs, &ss);
|
|
error = copyout(&ss, uap->buf, sizeof(ss));
|
|
}
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
svr4_sys_shmsys(td, uap)
|
|
struct thread *td;
|
|
struct svr4_sys_shmsys_args *uap;
|
|
{
|
|
|
|
DPRINTF(("svr4_shmsys(%d)\n", uap->what));
|
|
|
|
switch (uap->what) {
|
|
case SVR4_shmat:
|
|
return svr4_shmat(td, uap);
|
|
case SVR4_shmdt:
|
|
return svr4_shmdt(td, uap);
|
|
case SVR4_shmget:
|
|
return svr4_shmget(td, uap);
|
|
case SVR4_shmctl:
|
|
return svr4_shmctl(td, uap);
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
}
|
|
|
|
MODULE_DEPEND(svr4elf, sysvshm, 1, 1, 1);
|
|
#endif /* SYSVSHM */
|