df27227bab
the organization in svr4_ipc.c. - Use kern_msgctl(), kern_semctl(), and kern_shmctl() instead of the stackgap.
558 lines
12 KiB
C
558 lines
12 KiB
C
/*-
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* Copyright (c) 1995 Scott Bartram
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* Copyright (c) 1995 Steven Wallace
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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. 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/msg.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 <i386/ibcs2/ibcs2_types.h>
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#include <i386/ibcs2/ibcs2_signal.h>
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#include <i386/ibcs2/ibcs2_proto.h>
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#include <i386/ibcs2/ibcs2_util.h>
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#include <i386/ibcs2/ibcs2_ipc.h>
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#define IBCS2_IPC_RMID 0
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#define IBCS2_IPC_SET 1
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#define IBCS2_IPC_STAT 2
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#define IBCS2_SETVAL 8
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static void cvt_msqid2imsqid(struct msqid_ds *, struct ibcs2_msqid_ds *);
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static void cvt_imsqid2msqid(struct ibcs2_msqid_ds *, struct msqid_ds *);
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#ifdef unused
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static void cvt_sem2isem(struct sem *, struct ibcs2_sem *);
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static void cvt_isem2sem(struct ibcs2_sem *, struct sem *);
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#endif
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static void cvt_semid2isemid(struct semid_ds *, struct ibcs2_semid_ds *);
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static void cvt_isemid2semid(struct ibcs2_semid_ds *, struct semid_ds *);
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static void cvt_shmid2ishmid(struct shmid_ds *, struct ibcs2_shmid_ds *);
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static void cvt_ishmid2shmid(struct ibcs2_shmid_ds *, struct shmid_ds *);
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static void cvt_perm2iperm(struct ipc_perm *, struct ibcs2_ipc_perm *);
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static void cvt_iperm2perm(struct ibcs2_ipc_perm *, struct ipc_perm *);
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/*
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* iBCS2 msgsys call
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*/
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static void
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cvt_msqid2imsqid(bp, ibp)
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struct msqid_ds *bp;
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struct ibcs2_msqid_ds *ibp;
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{
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cvt_perm2iperm(&bp->msg_perm, &ibp->msg_perm);
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ibp->msg_first = bp->msg_first;
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ibp->msg_last = bp->msg_last;
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ibp->msg_cbytes = (u_short)bp->msg_cbytes;
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ibp->msg_qnum = (u_short)bp->msg_qnum;
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ibp->msg_qbytes = (u_short)bp->msg_qbytes;
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ibp->msg_lspid = (u_short)bp->msg_lspid;
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ibp->msg_lrpid = (u_short)bp->msg_lrpid;
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ibp->msg_stime = bp->msg_stime;
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ibp->msg_rtime = bp->msg_rtime;
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ibp->msg_ctime = bp->msg_ctime;
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return;
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}
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static void
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cvt_imsqid2msqid(ibp, bp)
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struct ibcs2_msqid_ds *ibp;
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struct msqid_ds *bp;
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{
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cvt_iperm2perm(&ibp->msg_perm, &bp->msg_perm);
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bp->msg_first = ibp->msg_first;
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bp->msg_last = ibp->msg_last;
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bp->msg_cbytes = ibp->msg_cbytes;
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bp->msg_qnum = ibp->msg_qnum;
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bp->msg_qbytes = ibp->msg_qbytes;
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bp->msg_lspid = ibp->msg_lspid;
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bp->msg_lrpid = ibp->msg_lrpid;
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bp->msg_stime = ibp->msg_stime;
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bp->msg_rtime = ibp->msg_rtime;
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bp->msg_ctime = ibp->msg_ctime;
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return;
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}
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struct ibcs2_msgget_args {
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int what;
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ibcs2_key_t key;
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int msgflg;
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};
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static int
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ibcs2_msgget(struct thread *td, void *v)
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{
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struct ibcs2_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 ibcs2_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 ibcs2_msqid_ds *buf;
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};
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static int
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ibcs2_msgctl(struct thread *td, void *v)
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{
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struct ibcs2_msgctl_args *uap = v;
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struct ibcs2_msqid_ds is;
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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 IBCS2_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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cvt_msqid2imsqid(&bs, &is);
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error = copyout(&is, uap->buf, sizeof(is));
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}
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return (error);
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case IBCS2_IPC_SET:
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error = copyin(uap->buf, &is, sizeof(is));
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if (error)
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return (error);
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cvt_imsqid2msqid(&is, &bs);
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return (kern_msgctl(td, uap->msqid, IPC_SET, &bs));
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case IBCS2_IPC_RMID:
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return (kern_msgctl(td, uap->msqid, IPC_RMID, NULL));
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}
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return (EINVAL);
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}
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struct ibcs2_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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ibcs2_msgrcv(struct thread *td, void *v)
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{
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struct ibcs2_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 ibcs2_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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ibcs2_msgsnd(struct thread *td, void *v)
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{
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struct ibcs2_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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int
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ibcs2_msgsys(td, uap)
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struct thread *td;
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struct ibcs2_msgsys_args *uap;
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{
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switch (uap->which) {
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case 0:
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return (ibcs2_msgget(td, uap));
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case 1:
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return (ibcs2_msgctl(td, uap));
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case 2:
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return (ibcs2_msgrcv(td, uap));
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case 3:
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return (ibcs2_msgsnd(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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/*
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* iBCS2 semsys call
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*/
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#ifdef unused
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static void
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cvt_sem2isem(bp, ibp)
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struct sem *bp;
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struct ibcs2_sem *ibp;
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{
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ibp->semval = bp->semval;
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ibp->sempid = bp->sempid;
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ibp->semncnt = bp->semncnt;
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ibp->semzcnt = bp->semzcnt;
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return;
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}
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static void
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cvt_isem2sem(ibp, bp)
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struct ibcs2_sem *ibp;
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struct sem *bp;
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{
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bp->semval = ibp->semval;
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bp->sempid = ibp->sempid;
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bp->semncnt = ibp->semncnt;
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bp->semzcnt = ibp->semzcnt;
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return;
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}
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#endif
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static void
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cvt_iperm2perm(ipp, pp)
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struct ibcs2_ipc_perm *ipp;
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struct ipc_perm *pp;
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{
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pp->uid = ipp->uid;
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pp->gid = ipp->gid;
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pp->cuid = ipp->cuid;
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pp->cgid = ipp->cgid;
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pp->mode = ipp->mode;
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pp->seq = ipp->seq;
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pp->key = ipp->key;
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}
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static void
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cvt_perm2iperm(pp, ipp)
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struct ipc_perm *pp;
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struct ibcs2_ipc_perm *ipp;
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{
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ipp->uid = pp->uid;
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ipp->gid = pp->gid;
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ipp->cuid = pp->cuid;
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ipp->cgid = pp->cgid;
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ipp->mode = pp->mode;
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ipp->seq = pp->seq;
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ipp->key = pp->key;
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}
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static void
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cvt_semid2isemid(bp, ibp)
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struct semid_ds *bp;
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struct ibcs2_semid_ds *ibp;
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{
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cvt_perm2iperm(&bp->sem_perm, &ibp->sem_perm);
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ibp->sem_base = (struct ibcs2_sem *)bp->sem_base;
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ibp->sem_nsems = bp->sem_nsems;
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ibp->sem_otime = bp->sem_otime;
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ibp->sem_ctime = bp->sem_ctime;
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return;
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}
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static void
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cvt_isemid2semid(ibp, bp)
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struct ibcs2_semid_ds *ibp;
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struct semid_ds *bp;
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{
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cvt_iperm2perm(&ibp->sem_perm, &bp->sem_perm);
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bp->sem_base = (struct sem *)ibp->sem_base;
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bp->sem_nsems = ibp->sem_nsems;
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bp->sem_otime = ibp->sem_otime;
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bp->sem_ctime = ibp->sem_ctime;
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return;
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}
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struct ibcs2_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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ibcs2_semctl(struct thread *td, void *v)
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{
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struct ibcs2_semctl_args *uap = v;
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struct ibcs2_semid_ds is;
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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 error;
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switch(uap->cmd) {
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case IBCS2_IPC_STAT:
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semun.buf = &bs;
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error = kern_semctl(td, uap->semid, uap->semnum, IPC_STAT,
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&semun, &rval);
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if (error)
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return (error);
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cvt_semid2isemid(&bs, &is);
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error = copyout(&is, uap->arg.buf, sizeof(is));
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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 IBCS2_IPC_SET:
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error = copyin(uap->arg.buf, &is, sizeof(is));
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if (error)
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return (error);
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cvt_isemid2semid(&is, &bs);
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semun.buf = &bs;
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return (kern_semctl(td, uap->semid, uap->semnum, IPC_SET,
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&semun, td->td_retval));
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}
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return (kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &uap->arg,
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td->td_retval));
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}
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struct ibcs2_semget_args {
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int what;
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ibcs2_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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ibcs2_semget(struct thread *td, void *v)
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{
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struct ibcs2_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 ibcs2_semop_args {
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int what;
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int semid;
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struct sembuf *sops;
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size_t nsops;
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};
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static int
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ibcs2_semop(struct thread *td, void *v)
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{
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struct ibcs2_semop_args *uap = v;
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struct semop_args ap;
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ap.semid = uap->semid;
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ap.sops = 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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ibcs2_semsys(td, uap)
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struct thread *td;
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struct ibcs2_semsys_args *uap;
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{
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switch (uap->which) {
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case 0:
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return (ibcs2_semctl(td, uap));
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case 1:
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return (ibcs2_semget(td, uap));
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case 2:
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return (ibcs2_semop(td, uap));
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}
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return (EINVAL);
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}
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/*
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* iBCS2 shmsys call
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*/
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static void
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cvt_shmid2ishmid(bp, ibp)
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struct shmid_ds *bp;
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struct ibcs2_shmid_ds *ibp;
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{
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cvt_perm2iperm(&bp->shm_perm, &ibp->shm_perm);
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ibp->shm_segsz = bp->shm_segsz;
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ibp->shm_lpid = bp->shm_lpid;
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ibp->shm_cpid = bp->shm_cpid;
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ibp->shm_nattch = bp->shm_nattch;
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ibp->shm_cnattch = 0; /* ignored anyway */
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ibp->shm_atime = bp->shm_atime;
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ibp->shm_dtime = bp->shm_dtime;
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ibp->shm_ctime = bp->shm_ctime;
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return;
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}
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static void
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cvt_ishmid2shmid(ibp, bp)
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struct ibcs2_shmid_ds *ibp;
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struct shmid_ds *bp;
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{
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cvt_iperm2perm(&ibp->shm_perm, &bp->shm_perm);
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bp->shm_segsz = ibp->shm_segsz;
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bp->shm_lpid = ibp->shm_lpid;
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bp->shm_cpid = ibp->shm_cpid;
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bp->shm_nattch = ibp->shm_nattch;
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bp->shm_atime = ibp->shm_atime;
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bp->shm_dtime = ibp->shm_dtime;
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bp->shm_ctime = ibp->shm_ctime;
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bp->shm_internal = (void *)0; /* ignored anyway */
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return;
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}
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struct ibcs2_shmat_args {
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int what;
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int shmid;
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const void *shmaddr;
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int shmflg;
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};
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static int
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ibcs2_shmat(struct thread *td, void *v)
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{
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struct ibcs2_shmat_args *uap = v;
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struct shmat_args ap;
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ap.shmid = uap->shmid;
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ap.shmaddr = uap->shmaddr;
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ap.shmflg = uap->shmflg;
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return (shmat(td, &ap));
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}
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struct ibcs2_shmctl_args {
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int what;
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int shmid;
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int cmd;
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struct ibcs2_shmid_ds *buf;
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};
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static int
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ibcs2_shmctl(struct thread *td, void *v)
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{
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struct ibcs2_shmctl_args *uap = v;
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struct ibcs2_shmid_ds is;
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struct shmid_ds bs;
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int error;
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switch(uap->cmd) {
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case IBCS2_IPC_STAT:
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error = kern_shmctl(td, uap->shmid, IPC_STAT, &bs, NULL);
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if (error)
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return (error);
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cvt_shmid2ishmid(&bs, &is);
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return (copyout(&is, uap->buf, sizeof(is)));
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case IBCS2_IPC_SET:
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error = copyin(uap->buf, &is, sizeof(is));
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if (error)
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return (error);
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cvt_ishmid2shmid(&is, &bs);
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return (kern_shmctl(td, uap->shmid, IPC_SET, &bs, NULL));
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case IPC_INFO:
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case SHM_INFO:
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case SHM_STAT:
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/* XXX: */
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return (EINVAL);
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}
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return (kern_shmctl(td, uap->shmid, uap->cmd, NULL, NULL));
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}
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struct ibcs2_shmdt_args {
|
|
int what;
|
|
const void *shmaddr;
|
|
};
|
|
|
|
static int
|
|
ibcs2_shmdt(struct thread *td, void *v)
|
|
{
|
|
struct ibcs2_shmdt_args *uap = v;
|
|
struct shmdt_args ap;
|
|
|
|
ap.shmaddr = uap->shmaddr;
|
|
return (shmdt(td, &ap));
|
|
}
|
|
|
|
struct ibcs2_shmget_args {
|
|
int what;
|
|
ibcs2_key_t key;
|
|
size_t size;
|
|
int shmflg;
|
|
};
|
|
|
|
static int
|
|
ibcs2_shmget(struct thread *td, void *v)
|
|
{
|
|
struct ibcs2_shmget_args *uap = v;
|
|
struct shmget_args ap;
|
|
|
|
ap.key = uap->key;
|
|
ap.size = uap->size;
|
|
ap.shmflg = uap->shmflg;
|
|
return (shmget(td, &ap));
|
|
}
|
|
|
|
int
|
|
ibcs2_shmsys(td, uap)
|
|
struct thread *td;
|
|
struct ibcs2_shmsys_args *uap;
|
|
{
|
|
|
|
switch (uap->which) {
|
|
case 0:
|
|
return (ibcs2_shmat(td, uap));
|
|
case 1:
|
|
return (ibcs2_shmctl(td, uap));
|
|
case 2:
|
|
return (ibcs2_shmdt(td, uap));
|
|
case 3:
|
|
return (ibcs2_shmget(td, uap));
|
|
}
|
|
return (EINVAL);
|
|
}
|
|
|
|
MODULE_DEPEND(ibcs2, sysvmsg, 1, 1, 1);
|
|
MODULE_DEPEND(ibcs2, sysvsem, 1, 1, 1);
|
|
MODULE_DEPEND(ibcs2, sysvshm, 1, 1, 1);
|