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freebsd-nq/sys/i386/ibcs2/ibcs2_ipc.c
Guido van Rooij e9e3bfdf42 1) Fix our view of how ibcs2_semid_ds looks. There is no padding int there 
(SVR4 does have it so that;s probably the cause of this bug)
2) Add a wrapper function for translation between ibcs2_ipc_perm and
ipc_perm as I think we screwed up when defining the ipc_perm struct and
mixed up 'normal' and creator [ug]id's
3) Fix IBCS2_IPC_STAT semctl. The FreeBSD version needs a union semun
whereas the IBCS2 version gives a struct ibcs2_semid_ds.

Apparently this is all fixed in the SVR4 compatibility code.
PR:		7729
1999-02-07 19:35:40 +00:00

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/*
* Copyright (c) 1995 Scott Bartram
* Copyright (c) 1995 Steven Wallace
* 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. 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.
*
* $Id: ibcs2_ipc.c,v 1.13 1997/11/06 19:28:28 phk Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/sysproto.h>
#include <i386/ibcs2/ibcs2_types.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_proto.h>
#include <i386/ibcs2/ibcs2_util.h>
#include <i386/ibcs2/ibcs2_ipc.h>
#define IBCS2_IPC_RMID 0
#define IBCS2_IPC_SET 1
#define IBCS2_IPC_STAT 2
#define IBCS2_SETVAL 8
static void cvt_msqid2imsqid __P((struct msqid_ds *, struct ibcs2_msqid_ds *));
static void cvt_imsqid2msqid __P((struct ibcs2_msqid_ds *, struct msqid_ds *));
#ifdef unused
static void cvt_sem2isem __P((struct sem *, struct ibcs2_sem *));
static void cvt_isem2sem __P((struct ibcs2_sem *, struct sem *));
#endif
static void cvt_semid2isemid __P((struct semid_ds *, struct ibcs2_semid_ds *));
static void cvt_isemid2semid __P((struct ibcs2_semid_ds *, struct semid_ds *));
static void cvt_shmid2ishmid __P((struct shmid_ds *, struct ibcs2_shmid_ds *));
static void cvt_ishmid2shmid __P((struct ibcs2_shmid_ds *, struct shmid_ds *));
static void cvt_perm2iperm __P((struct ipc_perm *, struct ibcs2_ipc_perm *));
static void cvt_iperm2perm __P((struct ibcs2_ipc_perm *, struct ipc_perm *));
/*
* iBCS2 msgsys call
*/
static void
cvt_msqid2imsqid(bp, ibp)
struct msqid_ds *bp;
struct ibcs2_msqid_ds *ibp;
{
cvt_perm2iperm(&bp->msg_perm, &ibp->msg_perm);
ibp->msg_first = bp->msg_first;
ibp->msg_last = bp->msg_last;
ibp->msg_cbytes = (u_short)bp->msg_cbytes;
ibp->msg_qnum = (u_short)bp->msg_qnum;
ibp->msg_qbytes = (u_short)bp->msg_qbytes;
ibp->msg_lspid = (u_short)bp->msg_lspid;
ibp->msg_lrpid = (u_short)bp->msg_lrpid;
ibp->msg_stime = bp->msg_stime;
ibp->msg_rtime = bp->msg_rtime;
ibp->msg_ctime = bp->msg_ctime;
return;
}
static void
cvt_imsqid2msqid(ibp, bp)
struct ibcs2_msqid_ds *ibp;
struct msqid_ds *bp;
{
cvt_iperm2perm(&ibp->msg_perm, &bp->msg_perm);
bp->msg_first = ibp->msg_first;
bp->msg_last = ibp->msg_last;
bp->msg_cbytes = ibp->msg_cbytes;
bp->msg_qnum = ibp->msg_qnum;
bp->msg_qbytes = ibp->msg_qbytes;
bp->msg_lspid = ibp->msg_lspid;
bp->msg_lrpid = ibp->msg_lrpid;
bp->msg_stime = ibp->msg_stime;
bp->msg_rtime = ibp->msg_rtime;
bp->msg_ctime = ibp->msg_ctime;
return;
}
int
ibcs2_msgsys(p, uap)
struct proc *p;
struct ibcs2_msgsys_args *uap;
{
switch (SCARG(uap, which)) {
case 0: /* msgget */
SCARG(uap, which) = 1;
return msgsys(p, (struct msgsys_args *)uap);
case 1: { /* msgctl */
int error;
struct msgsys_args margs;
caddr_t sg = stackgap_init();
SCARG(&margs, which) = 0;
SCARG(&margs, a2) = SCARG(uap, a2);
SCARG(&margs, a4) =
(int)stackgap_alloc(&sg, sizeof(struct msqid_ds));
SCARG(&margs, a3) = SCARG(uap, a3);
switch (SCARG(&margs, a3)) {
case IBCS2_IPC_STAT:
error = msgsys(p, &margs);
if (!error)
cvt_msqid2imsqid(
(struct msqid_ds *)SCARG(&margs, a4),
(struct ibcs2_msqid_ds *)SCARG(uap, a4));
return error;
case IBCS2_IPC_SET:
cvt_imsqid2msqid((struct ibcs2_msqid_ds *)SCARG(uap,
a4),
(struct msqid_ds *)SCARG(&margs, a4));
return msgsys(p, &margs);
case IBCS2_IPC_RMID:
return msgsys(p, &margs);
}
return EINVAL;
}
case 2: /* msgrcv */
SCARG(uap, which) = 3;
return msgsys(p, (struct msgsys_args *)uap);
case 3: /* msgsnd */
SCARG(uap, which) = 2;
return msgsys(p, (struct msgsys_args *)uap);
default:
return EINVAL;
}
}
/*
* iBCS2 semsys call
*/
#ifdef unused
static void
cvt_sem2isem(bp, ibp)
struct sem *bp;
struct ibcs2_sem *ibp;
{
ibp->semval = bp->semval;
ibp->sempid = bp->sempid;
ibp->semncnt = bp->semncnt;
ibp->semzcnt = bp->semzcnt;
return;
}
static void
cvt_isem2sem(ibp, bp)
struct ibcs2_sem *ibp;
struct sem *bp;
{
bp->semval = ibp->semval;
bp->sempid = ibp->sempid;
bp->semncnt = ibp->semncnt;
bp->semzcnt = ibp->semzcnt;
return;
}
#endif
static void
cvt_iperm2perm(ipp, pp)
struct ibcs2_ipc_perm *ipp;
struct ipc_perm *pp;
{
pp->uid = ipp->uid;
pp->gid = ipp->gid;
pp->cuid = ipp->cuid;
pp->cgid = ipp->cgid;
pp->mode = ipp->mode;
pp->seq = ipp->seq;
pp->key = ipp->key;
}
static void
cvt_perm2iperm(pp, ipp)
struct ipc_perm *pp;
struct ibcs2_ipc_perm *ipp;
{
ipp->uid = pp->uid;
ipp->gid = pp->gid;
ipp->cuid = pp->cuid;
ipp->cgid = pp->cgid;
ipp->mode = pp->mode;
ipp->seq = pp->seq;
ipp->key = pp->key;
}
static void
cvt_semid2isemid(bp, ibp)
struct semid_ds *bp;
struct ibcs2_semid_ds *ibp;
{
cvt_perm2iperm(&bp->sem_perm, &ibp->sem_perm);
ibp->sem_base = (struct ibcs2_sem *)bp->sem_base;
ibp->sem_nsems = bp->sem_nsems;
ibp->sem_otime = bp->sem_otime;
ibp->sem_ctime = bp->sem_ctime;
return;
}
static void
cvt_isemid2semid(ibp, bp)
struct ibcs2_semid_ds *ibp;
struct semid_ds *bp;
{
cvt_iperm2perm(&ibp->sem_perm, &bp->sem_perm);
bp->sem_base = (struct sem *)ibp->sem_base;
bp->sem_nsems = ibp->sem_nsems;
bp->sem_otime = ibp->sem_otime;
bp->sem_ctime = ibp->sem_ctime;
return;
}
int
ibcs2_semsys(p, uap)
struct proc *p;
struct ibcs2_semsys_args *uap;
{
int error;
switch (SCARG(uap, which)) {
case 0: /* semctl */
switch(SCARG(uap, a4)) {
case IBCS2_IPC_STAT:
{
struct ibcs2_semid_ds *isp;
struct semid_ds *sp;
union semun *sup, ssu;
caddr_t sg = stackgap_init();
ssu = (union semun) SCARG(uap, a5);
sp = stackgap_alloc(&sg, sizeof(struct semid_ds));
sup = stackgap_alloc(&sg, sizeof(union semun));
sup->buf = sp;
SCARG(uap, a5) = (int)sup;
error = semsys(p, (struct semsys_args *)uap);
if (!error) {
SCARG(uap, a5) = (int)ssu.buf;
isp = stackgap_alloc(&sg, sizeof(*isp));
cvt_semid2isemid(sp, isp);
error = copyout((caddr_t)isp,
(caddr_t)ssu.buf,
sizeof(*isp));
}
return error;
}
case IBCS2_IPC_SET:
{
struct ibcs2_semid_ds *isp;
struct semid_ds *sp;
caddr_t sg = stackgap_init();
isp = stackgap_alloc(&sg, sizeof(*isp));
sp = stackgap_alloc(&sg, sizeof(*sp));
error = copyin((caddr_t)SCARG(uap, a5), (caddr_t)isp,
sizeof(*isp));
if (error)
return error;
cvt_isemid2semid(isp, sp);
SCARG(uap, a5) = (int)sp;
return semsys(p, (struct semsys_args *)uap);
}
case IBCS2_SETVAL:
{
union semun *sp;
caddr_t sg = stackgap_init();
sp = stackgap_alloc(&sg, sizeof(*sp));
sp->val = (int) SCARG(uap, a5);
SCARG(uap, a5) = (int)sp;
return semsys(p, (struct semsys_args *)uap);
}
}
return semsys(p, (struct semsys_args *)uap);
case 1: /* semget */
return semsys(p, (struct semsys_args *)uap);
case 2: /* semop */
return semsys(p, (struct semsys_args *)uap);
}
return EINVAL;
}
/*
* iBCS2 shmsys call
*/
static void
cvt_shmid2ishmid(bp, ibp)
struct shmid_ds *bp;
struct ibcs2_shmid_ds *ibp;
{
cvt_perm2iperm(&bp->shm_perm, &ibp->shm_perm);
ibp->shm_segsz = bp->shm_segsz;
ibp->shm_lpid = bp->shm_lpid;
ibp->shm_cpid = bp->shm_cpid;
ibp->shm_nattch = bp->shm_nattch;
ibp->shm_cnattch = 0; /* ignored anyway */
ibp->shm_atime = bp->shm_atime;
ibp->shm_dtime = bp->shm_dtime;
ibp->shm_ctime = bp->shm_ctime;
return;
}
static void
cvt_ishmid2shmid(ibp, bp)
struct ibcs2_shmid_ds *ibp;
struct shmid_ds *bp;
{
cvt_iperm2perm(&ibp->shm_perm, &bp->shm_perm);
bp->shm_segsz = ibp->shm_segsz;
bp->shm_lpid = ibp->shm_lpid;
bp->shm_cpid = ibp->shm_cpid;
bp->shm_nattch = ibp->shm_nattch;
bp->shm_atime = ibp->shm_atime;
bp->shm_dtime = ibp->shm_dtime;
bp->shm_ctime = ibp->shm_ctime;
bp->shm_internal = (void *)0; /* ignored anyway */
return;
}
int
ibcs2_shmsys(p, uap)
struct proc *p;
struct ibcs2_shmsys_args *uap;
{
int error;
switch (SCARG(uap, which)) {
case 0: /* shmat */
return shmsys(p, (struct shmsys_args *)uap);
case 1: /* shmctl */
switch(SCARG(uap, a3)) {
case IBCS2_IPC_STAT:
{
struct ibcs2_shmid_ds *isp;
struct shmid_ds *sp;
caddr_t sg = stackgap_init();
isp = (struct ibcs2_shmid_ds *)SCARG(uap, a4);
sp = stackgap_alloc(&sg, sizeof(*sp));
SCARG(uap, a4) = (int)sp;
error = shmsys(p, (struct shmsys_args *)uap);
if (!error) {
SCARG(uap, a4) = (int)isp;
isp = stackgap_alloc(&sg, sizeof(*isp));
cvt_shmid2ishmid(sp, isp);
error = copyout((caddr_t)isp,
(caddr_t)SCARG(uap, a4),
sizeof(*isp));
}
return error;
}
case IBCS2_IPC_SET:
{
struct ibcs2_shmid_ds *isp;
struct shmid_ds *sp;
caddr_t sg = stackgap_init();
isp = stackgap_alloc(&sg, sizeof(*isp));
sp = stackgap_alloc(&sg, sizeof(*sp));
error = copyin((caddr_t)SCARG(uap, a4), (caddr_t)isp,
sizeof(*isp));
if (error)
return error;
cvt_ishmid2shmid(isp, sp);
SCARG(uap, a4) = (int)sp;
return shmsys(p, (struct shmsys_args *)uap);
}
}
return shmsys(p, (struct shmsys_args *)uap);
case 2: /* shmdt */
return shmsys(p, (struct shmsys_args *)uap);
case 3: /* shmget */
return shmsys(p, (struct shmsys_args *)uap);
}
return EINVAL;
}
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