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freebsd/sys/svr4/svr4_ipc.c
1999-07-30 12:45:21 +00:00

833 lines
21 KiB
C

/*
* $Id$
* Derived from:
* $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $ */
/*-
* Original copyright:
*
* Copyright (c) 1995 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Portions of this code have been derived from software contributed
* to the FreeBSD Project by Mark Newton.
*
* Copyright (c) 1999 Mark Newton
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* XXX- This code is presently a no-op on FreeBSD (and isn't compiled due
* to preprocessor conditionals). A nice project for a kernel hacking
* novice might be to MakeItGo, but I have more important fish to fry
* at present.
*
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/shm.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/systm.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/sysproto.h>
#include <svr4/svr4_types.h>
#include <svr4/svr4_signal.h>
#include <svr4/svr4_proto.h>
#include <svr4/svr4_util.h>
#include <svr4/svr4_ipc.h>
#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
static void svr4_to_bsd_ipc_perm __P((const struct svr4_ipc_perm *,
struct ipc_perm *));
static void bsd_to_svr4_ipc_perm __P((const struct ipc_perm *,
struct svr4_ipc_perm *));
#endif
#ifdef SYSVSEM
static void bsd_to_svr4_semid_ds __P((const struct semid_ds *,
struct svr4_semid_ds *));
static void svr4_to_bsd_semid_ds __P((const struct svr4_semid_ds *,
struct semid_ds *));
static int svr4_setsemun __P((caddr_t *sgp, union semun **argp,
union semun *usp));
static int svr4_semop __P((struct proc *, void *, register_t *));
static int svr4_semget __P((struct proc *, void *, register_t *));
static int svr4_semctl __P((struct proc *, void *, register_t *));
#endif
#ifdef SYSVMSG
static void bsd_to_svr4_msqid_ds __P((const struct msqid_ds *,
struct svr4_msqid_ds *));
static void svr4_to_bsd_msqid_ds __P((const struct svr4_msqid_ds *,
struct msqid_ds *));
static int svr4_msgsnd __P((struct proc *, void *, register_t *));
static int svr4_msgrcv __P((struct proc *, void *, register_t *));
static int svr4_msgget __P((struct proc *, void *, register_t *));
static int svr4_msgctl __P((struct proc *, void *, register_t *));
#endif
#ifdef SYSVSHM
static void bsd_to_svr4_shmid_ds __P((const struct shmid_ds *,
struct svr4_shmid_ds *));
static void svr4_to_bsd_shmid_ds __P((const struct svr4_shmid_ds *,
struct shmid_ds *));
static int svr4_shmat __P((struct proc *, void *, register_t *));
static int svr4_shmdt __P((struct proc *, void *, register_t *));
static int svr4_shmget __P((struct proc *, void *, register_t *));
static int svr4_shmctl __P((struct proc *, void *, register_t *));
#endif
#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
static void
svr4_to_bsd_ipc_perm(spp, bpp)
const struct svr4_ipc_perm *spp;
struct ipc_perm *bpp;
{
bpp->key = spp->key;
bpp->uid = spp->uid;
bpp->gid = spp->gid;
bpp->cuid = spp->cuid;
bpp->cgid = spp->cgid;
bpp->mode = spp->mode;
bpp->seq = spp->seq;
}
static void
bsd_to_svr4_ipc_perm(bpp, spp)
const struct ipc_perm *bpp;
struct svr4_ipc_perm *spp;
{
spp->key = bpp->key;
spp->uid = bpp->uid;
spp->gid = bpp->gid;
spp->cuid = bpp->cuid;
spp->cgid = bpp->cgid;
spp->mode = bpp->mode;
spp->seq = bpp->seq;
}
#endif
#ifdef SYSVSEM
static void
bsd_to_svr4_semid_ds(bds, sds)
const struct semid_ds *bds;
struct svr4_semid_ds *sds;
{
bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm);
sds->sem_base = (struct svr4_sem *) bds->sem_base;
sds->sem_nsems = bds->sem_nsems;
sds->sem_otime = bds->sem_otime;
sds->sem_pad1 = bds->sem_pad1;
sds->sem_ctime = bds->sem_ctime;
sds->sem_pad2 = bds->sem_pad2;
}
static void
svr4_to_bsd_semid_ds(sds, bds)
const struct svr4_semid_ds *sds;
struct semid_ds *bds;
{
svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm);
bds->sem_base = (struct sem *) bds->sem_base;
bds->sem_nsems = sds->sem_nsems;
bds->sem_otime = sds->sem_otime;
bds->sem_pad1 = sds->sem_pad1;
bds->sem_ctime = sds->sem_ctime;
bds->sem_pad2 = sds->sem_pad2;
}
static int
svr4_setsemun(sgp, argp, usp)
caddr_t *sgp;
union semun **argp;
union semun *usp;
{
*argp = stackgap_alloc(sgp, sizeof(union semun));
return copyout((caddr_t)usp, *argp, sizeof(union semun));
}
struct svr4_sys_semctl_args {
syscallarg(int) what;
syscallarg(int) semid;
syscallarg(int) semnum;
syscallarg(int) cmd;
syscallarg(union semun) arg;
};
static int
svr4_semctl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
int error;
struct svr4_sys_semctl_args *uap = v;
struct sys___semctl_args ap;
struct svr4_semid_ds ss;
struct semid_ds bs, *bsp;
caddr_t sg = stackgap_init(p->p_emul);
SCARG(&ap, semid) = SCARG(uap, semid);
SCARG(&ap, semnum) = SCARG(uap, semnum);
switch (SCARG(uap, cmd)) {
case SVR4_SEM_GETZCNT:
case SVR4_SEM_GETNCNT:
case SVR4_SEM_GETPID:
case SVR4_SEM_GETVAL:
switch (SCARG(uap, cmd)) {
case SVR4_SEM_GETZCNT:
SCARG(&ap, cmd) = GETZCNT;
break;
case SVR4_SEM_GETNCNT:
SCARG(&ap, cmd) = GETNCNT;
break;
case SVR4_SEM_GETPID:
SCARG(&ap, cmd) = GETPID;
break;
case SVR4_SEM_GETVAL:
SCARG(&ap, cmd) = GETVAL;
break;
}
return sys___semctl(p, &ap, retval);
case SVR4_SEM_SETVAL:
error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg));
if (error)
return error;
SCARG(&ap, cmd) = SETVAL;
return sys___semctl(p, &ap, retval);
case SVR4_SEM_GETALL:
error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg));
if (error)
return error;
SCARG(&ap, cmd) = GETVAL;
return sys___semctl(p, &ap, retval);
case SVR4_SEM_SETALL:
error = svr4_setsemun(&sg, &SCARG(&ap, arg), &SCARG(uap, arg));
if (error)
return error;
SCARG(&ap, cmd) = SETVAL;
return sys___semctl(p, &ap, retval);
case SVR4_IPC_STAT:
SCARG(&ap, cmd) = IPC_STAT;
bsp = stackgap_alloc(&sg, sizeof(bs));
error = svr4_setsemun(&sg, &SCARG(&ap, arg),
(union semun *)&bsp);
if (error)
return error;
if ((error = sys___semctl(p, &ap, retval)) != 0)
return error;
error = copyin((caddr_t)bsp, (caddr_t)&bs, sizeof(bs));
if (error)
return error;
bsd_to_svr4_semid_ds(&bs, &ss);
return copyout(&ss, SCARG(uap, arg).buf, sizeof(ss));
case SVR4_IPC_SET:
SCARG(&ap, cmd) = IPC_SET;
bsp = stackgap_alloc(&sg, sizeof(bs));
error = svr4_setsemun(&sg, &SCARG(&ap, arg),
(union semun *)&bsp);
if (error)
return error;
error = copyin(SCARG(uap, arg).buf, (caddr_t) &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_semid_ds(&ss, &bs);
error = copyout(&bs, bsp, sizeof(bs));
if (error)
return error;
return sys___semctl(p, &ap, retval);
case SVR4_IPC_RMID:
SCARG(&ap, cmd) = IPC_RMID;
bsp = stackgap_alloc(&sg, sizeof(bs));
error = svr4_setsemun(&sg, &SCARG(&ap, arg),
(union semun *)&bsp);
if (error)
return error;
error = copyin(SCARG(uap, arg).buf, &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_semid_ds(&ss, &bs);
error = copyout(&bs, bsp, sizeof(bs));
if (error)
return error;
return sys___semctl(p, &ap, retval);
default:
return EINVAL;
}
}
struct svr4_sys_semget_args {
syscallarg(int) what;
syscallarg(svr4_key_t) key;
syscallarg(int) nsems;
syscallarg(int) semflg;
};
static int
svr4_semget(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_semget_args *uap = v;
struct sys_semget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, nsems) = SCARG(uap, nsems);
SCARG(&ap, semflg) = SCARG(uap, semflg);
return sys_semget(p, &ap, retval);
}
struct svr4_sys_semop_args {
syscallarg(int) what;
syscallarg(int) semid;
syscallarg(struct svr4_sembuf *) sops;
syscallarg(u_int) nsops;
};
static int
svr4_semop(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_semop_args *uap = v;
struct sys_semop_args ap;
SCARG(&ap, semid) = SCARG(uap, semid);
/* These are the same */
SCARG(&ap, sops) = (struct sembuf *) SCARG(uap, sops);
SCARG(&ap, nsops) = SCARG(uap, nsops);
return sys_semop(p, &ap, retval);
}
int
svr4_sys_semsys(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_semsys_args *uap = v;
DPRINTF(("svr4_semsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_semctl:
return svr4_semctl(p, v, retval);
case SVR4_semget:
return svr4_semget(p, v, retval);
case SVR4_semop:
return svr4_semop(p, v, retval);
default:
return EINVAL;
}
}
#endif
#ifdef SYSVMSG
static void
bsd_to_svr4_msqid_ds(bds, sds)
const struct msqid_ds *bds;
struct svr4_msqid_ds *sds;
{
bsd_to_svr4_ipc_perm(&bds->msg_perm, &sds->msg_perm);
sds->msg_first = (struct svr4_msg *) bds->msg_first;
sds->msg_last = (struct svr4_msg *) bds->msg_last;
sds->msg_cbytes = bds->msg_cbytes;
sds->msg_qnum = bds->msg_qnum;
sds->msg_qbytes = bds->msg_qbytes;
sds->msg_lspid = bds->msg_lspid;
sds->msg_lrpid = bds->msg_lrpid;
sds->msg_stime = bds->msg_stime;
sds->msg_pad1 = bds->msg_pad1;
sds->msg_rtime = bds->msg_rtime;
sds->msg_pad2 = bds->msg_pad2;
sds->msg_ctime = bds->msg_ctime;
sds->msg_pad3 = bds->msg_pad3;
/* use the padding for the rest of the fields */
{
const short *pad = (const short *) bds->msg_pad4;
sds->msg_cv = pad[0];
sds->msg_qnum_cv = pad[1];
}
}
static void
svr4_to_bsd_msqid_ds(sds, bds)
const struct svr4_msqid_ds *sds;
struct msqid_ds *bds;
{
svr4_to_bsd_ipc_perm(&sds->msg_perm, &bds->msg_perm);
bds->msg_first = (struct msg *) sds->msg_first;
bds->msg_last = (struct msg *) sds->msg_last;
bds->msg_cbytes = sds->msg_cbytes;
bds->msg_qnum = sds->msg_qnum;
bds->msg_qbytes = sds->msg_qbytes;
bds->msg_lspid = sds->msg_lspid;
bds->msg_lrpid = sds->msg_lrpid;
bds->msg_stime = sds->msg_stime;
bds->msg_pad1 = sds->msg_pad1;
bds->msg_rtime = sds->msg_rtime;
bds->msg_pad2 = sds->msg_pad2;
bds->msg_ctime = sds->msg_ctime;
bds->msg_pad3 = sds->msg_pad3;
/* use the padding for the rest of the fields */
{
short *pad = (short *) bds->msg_pad4;
pad[0] = sds->msg_cv;
pad[1] = sds->msg_qnum_cv;
}
}
struct svr4_sys_msgsnd_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(void *) msgp;
syscallarg(size_t) msgsz;
syscallarg(int) msgflg;
};
static int
svr4_msgsnd(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_msgsnd_args *uap = v;
struct sys_msgsnd_args ap;
SCARG(&ap, msqid) = SCARG(uap, msqid);
SCARG(&ap, msgp) = SCARG(uap, msgp);
SCARG(&ap, msgsz) = SCARG(uap, msgsz);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgsnd(p, &ap, retval);
}
struct svr4_sys_msgrcv_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(void *) msgp;
syscallarg(size_t) msgsz;
syscallarg(long) msgtyp;
syscallarg(int) msgflg;
};
static int
svr4_msgrcv(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_msgrcv_args *uap = v;
struct sys_msgrcv_args ap;
SCARG(&ap, msqid) = SCARG(uap, msqid);
SCARG(&ap, msgp) = SCARG(uap, msgp);
SCARG(&ap, msgsz) = SCARG(uap, msgsz);
SCARG(&ap, msgtyp) = SCARG(uap, msgtyp);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgrcv(p, &ap, retval);
}
struct svr4_sys_msgget_args {
syscallarg(int) what;
syscallarg(svr4_key_t) key;
syscallarg(int) msgflg;
};
static int
svr4_msgget(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_msgget_args *uap = v;
struct sys_msgget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgget(p, &ap, retval);
}
struct svr4_sys_msgctl_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(int) cmd;
syscallarg(struct svr4_msqid_ds *) buf;
};
static int
svr4_msgctl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
int error;
struct svr4_sys_msgctl_args *uap = v;
struct sys_msgctl_args ap;
struct svr4_msqid_ds ss;
struct msqid_ds bs;
caddr_t sg = stackgap_init(p->p_emul);
SCARG(&ap, msqid) = SCARG(uap, msqid);
SCARG(&ap, cmd) = SCARG(uap, cmd);
SCARG(&ap, buf) = stackgap_alloc(&sg, sizeof(bs));
switch (SCARG(uap, cmd)) {
case SVR4_IPC_STAT:
SCARG(&ap, cmd) = IPC_STAT;
if ((error = sys_msgctl(p, &ap, retval)) != 0)
return error;
error = copyin(&bs, SCARG(&ap, buf), sizeof bs);
if (error)
return error;
bsd_to_svr4_msqid_ds(&bs, &ss);
return copyout(&ss, SCARG(uap, buf), sizeof ss);
case SVR4_IPC_SET:
SCARG(&ap, cmd) = IPC_SET;
error = copyin(SCARG(uap, buf), &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_msqid_ds(&ss, &bs);
error = copyout(&bs, SCARG(&ap, buf), sizeof bs);
if (error)
return error;
return sys_msgctl(p, &ap, retval);
case SVR4_IPC_RMID:
SCARG(&ap, cmd) = IPC_RMID;
error = copyin(SCARG(uap, buf), &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_msqid_ds(&ss, &bs);
error = copyout(&bs, SCARG(&ap, buf), sizeof bs);
if (error)
return error;
return sys_msgctl(p, &ap, retval);
default:
return EINVAL;
}
}
int
svr4_sys_msgsys(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_msgsys_args *uap = v;
DPRINTF(("svr4_msgsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_msgsnd:
return svr4_msgsnd(p, v, retval);
case SVR4_msgrcv:
return svr4_msgrcv(p, v, retval);
case SVR4_msgget:
return svr4_msgget(p, v, retval);
case SVR4_msgctl:
return svr4_msgctl(p, v, retval);
default:
return EINVAL;
}
}
#endif
#ifdef SYSVSHM
static void
bsd_to_svr4_shmid_ds(bds, sds)
const struct shmid_ds *bds;
struct svr4_shmid_ds *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 = bds->shm_internal;
sds->shm_nattch = bds->shm_nattch;
sds->shm_cnattch = 0;
sds->shm_atime = bds->shm_atime;
sds->shm_pad1 = 0;
sds->shm_dtime = bds->shm_dtime;
sds->shm_pad2 = 0;
sds->shm_ctime = bds->shm_ctime;
sds->shm_pad3 = 0;
}
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_internal = sds->shm_amp;
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 {
syscallarg(int) what;
syscallarg(int) shmid;
syscallarg(void *) shmaddr;
syscallarg(int) shmflg;
};
static int
svr4_shmat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_shmat_args *uap = v;
struct sys_shmat_args ap;
SCARG(&ap, shmid) = SCARG(uap, shmid);
SCARG(&ap, shmaddr) = SCARG(uap, shmaddr);
SCARG(&ap, shmflg) = SCARG(uap, shmflg);
return sys_shmat(p, &ap, retval);
}
struct svr4_sys_shmdt_args {
syscallarg(int) what;
syscallarg(void *) shmaddr;
};
static int
svr4_shmdt(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_shmdt_args *uap = v;
struct sys_shmdt_args ap;
SCARG(&ap, shmaddr) = SCARG(uap, shmaddr);
return sys_shmdt(p, &ap, retval);
}
struct svr4_sys_shmget_args {
syscallarg(int) what;
syscallarg(key_t) key;
syscallarg(int) size;
syscallarg(int) shmflg;
};
static int
svr4_shmget(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_shmget_args *uap = v;
struct sys_shmget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, size) = SCARG(uap, size);
SCARG(&ap, shmflg) = SCARG(uap, shmflg);
return sys_shmget(p, &ap, retval);
}
struct svr4_sys_shmctl_args {
syscallarg(int) what;
syscallarg(int) shmid;
syscallarg(int) cmd;
syscallarg(struct svr4_shmid_ds *) buf;
};
int
svr4_shmctl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_shmctl_args *uap = v;
int error;
caddr_t sg = stackgap_init(p->p_emul);
struct sys_shmctl_args ap;
struct shmid_ds bs;
struct svr4_shmid_ds ss;
SCARG(&ap, shmid) = SCARG(uap, shmid);
if (SCARG(uap, buf) != NULL) {
SCARG(&ap, buf) = stackgap_alloc(&sg, sizeof (struct shmid_ds));
switch (SCARG(uap, cmd)) {
case SVR4_IPC_SET:
case SVR4_IPC_RMID:
case SVR4_SHM_LOCK:
case SVR4_SHM_UNLOCK:
error = copyin(SCARG(uap, buf), (caddr_t) &ss,
sizeof ss);
if (error)
return error;
svr4_to_bsd_shmid_ds(&ss, &bs);
error = copyout(&bs, SCARG(&ap, buf), sizeof bs);
if (error)
return error;
break;
default:
break;
}
}
else
SCARG(&ap, buf) = NULL;
switch (SCARG(uap, cmd)) {
case SVR4_IPC_STAT:
SCARG(&ap, cmd) = IPC_STAT;
if ((error = sys_shmctl(p, &ap, retval)) != 0)
return error;
if (SCARG(uap, buf) == NULL)
return 0;
error = copyin(&bs, SCARG(&ap, buf), sizeof bs);
if (error)
return error;
bsd_to_svr4_shmid_ds(&bs, &ss);
return copyout(&ss, SCARG(uap, buf), sizeof ss);
case SVR4_IPC_SET:
SCARG(&ap, cmd) = IPC_SET;
return sys_shmctl(p, &ap, retval);
case SVR4_IPC_RMID:
case SVR4_SHM_LOCK:
case SVR4_SHM_UNLOCK:
switch (SCARG(uap, cmd)) {
case SVR4_IPC_RMID:
SCARG(&ap, cmd) = IPC_RMID;
break;
case SVR4_SHM_LOCK:
SCARG(&ap, cmd) = SHM_LOCK;
break;
case SVR4_SHM_UNLOCK:
SCARG(&ap, cmd) = SHM_UNLOCK;
break;
default:
return EINVAL;
}
return sys_shmctl(p, &ap, retval);
default:
return EINVAL;
}
}
int
svr4_sys_shmsys(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_shmsys_args *uap = v;
DPRINTF(("svr4_shmsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_shmat:
return svr4_shmat(p, v, retval);
case SVR4_shmdt:
return svr4_shmdt(p, v, retval);
case SVR4_shmget:
return svr4_shmget(p, v, retval);
case SVR4_shmctl:
return svr4_shmctl(p, v, retval);
default:
return ENOSYS;
}
}
#endif /* SYSVSHM */