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| Current File : //sys/compat/svr4/svr4_ipc.c |
/*-
* 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.
*
* Derived from: $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/compat/svr4/svr4_ipc.c 225617 2011-09-16 13:58:51Z kmacy $");
#include "opt_sysvipc.h"
#include <sys/param.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/proc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <compat/svr4/svr4.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_proto.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_ipc.h>
#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
static void svr4_to_bsd_ipc_perm(const struct svr4_ipc_perm *,
struct ipc_perm *);
static void bsd_to_svr4_ipc_perm(const struct ipc_perm *,
struct svr4_ipc_perm *);
#endif
#ifdef SYSVSEM
static void bsd_to_svr4_semid_ds(const struct semid_ds *,
struct svr4_semid_ds *);
static void svr4_to_bsd_semid_ds(const struct svr4_semid_ds *,
struct semid_ds *);
static int svr4_semop(struct thread *, void *);
static int svr4_semget(struct thread *, void *);
static int svr4_semctl(struct thread *, void *);
#endif
#ifdef SYSVMSG
static void bsd_to_svr4_msqid_ds(const struct msqid_ds *,
struct svr4_msqid_ds *);
static void svr4_to_bsd_msqid_ds(const struct svr4_msqid_ds *,
struct msqid_ds *);
static int svr4_msgsnd(struct thread *, void *);
static int svr4_msgrcv(struct thread *, void *);
static int svr4_msgget(struct thread *, void *);
static int svr4_msgctl(struct thread *, void *);
#endif
#ifdef SYSVSHM
static void bsd_to_svr4_shmid_ds(const struct shmid_ds *,
struct svr4_shmid_ds *);
static void svr4_to_bsd_shmid_ds(const struct svr4_shmid_ds *,
struct shmid_ds *);
static int svr4_shmat(struct thread *, void *);
static int svr4_shmdt(struct thread *, void *);
static int svr4_shmget(struct thread *, void *);
static int svr4_shmctl(struct thread *, void *);
#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;
{
bzero(sds, sizeof(*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_ctime = bds->sem_ctime;
}
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_ctime = sds->sem_ctime;
}
struct svr4_sys_semctl_args {
int what;
int semid;
int semnum;
int cmd;
union semun arg;
};
static int
svr4_semctl(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_semctl_args *uap = v;
struct svr4_semid_ds ss;
struct semid_ds bs;
union semun semun;
register_t rval;
int cmd, error;
switch (uap->cmd) {
case SVR4_SEM_GETZCNT:
cmd = GETZCNT;
break;
case SVR4_SEM_GETNCNT:
cmd = GETNCNT;
break;
case SVR4_SEM_GETPID:
cmd = GETPID;
break;
case SVR4_SEM_GETVAL:
cmd = GETVAL;
break;
case SVR4_SEM_SETVAL:
cmd = SETVAL;
break;
case SVR4_SEM_GETALL:
cmd = GETVAL;
break;
case SVR4_SEM_SETALL:
cmd = SETVAL;
break;
case SVR4_IPC_STAT:
cmd = IPC_STAT;
semun.buf = &bs;
error = kern_semctl(td, uap->semid, uap->semnum, cmd, &semun,
&rval);
if (error)
return (error);
bsd_to_svr4_semid_ds(&bs, &ss);
error = copyout(&ss, uap->arg.buf, sizeof(ss));
if (error == 0)
td->td_retval[0] = rval;
return (error);
case SVR4_IPC_SET:
cmd = IPC_SET;
error = copyin(uap->arg.buf, (caddr_t) &ss, sizeof ss);
if (error)
return (error);
svr4_to_bsd_semid_ds(&ss, &bs);
semun.buf = &bs;
return (kern_semctl(td, uap->semid, uap->semnum, cmd, &semun,
td->td_retval));
case SVR4_IPC_RMID:
cmd = IPC_RMID;
break;
default:
return EINVAL;
}
return (kern_semctl(td, uap->semid, uap->semnum, cmd, &uap->arg,
td->td_retval));
}
struct svr4_sys_semget_args {
int what;
svr4_key_t key;
int nsems;
int semflg;
};
static int
svr4_semget(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_semget_args *uap = v;
struct semget_args ap;
ap.key = uap->key;
ap.nsems = uap->nsems;
ap.semflg = uap->semflg;
return sys_semget(td, &ap);
}
struct svr4_sys_semop_args {
int what;
int semid;
struct svr4_sembuf * sops;
u_int nsops;
};
static int
svr4_semop(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_semop_args *uap = v;
struct semop_args ap;
ap.semid = uap->semid;
/* These are the same */
ap.sops = (struct sembuf *) uap->sops;
ap.nsops = uap->nsops;
return sys_semop(td, &ap);
}
int
svr4_sys_semsys(td, uap)
struct thread *td;
struct svr4_sys_semsys_args *uap;
{
DPRINTF(("svr4_semsys(%d)\n", uap->what));
switch (uap->what) {
case SVR4_semctl:
return svr4_semctl(td, uap);
case SVR4_semget:
return svr4_semget(td, uap);
case SVR4_semop:
return svr4_semop(td, uap);
default:
return EINVAL;
}
}
MODULE_DEPEND(svr4elf, sysvsem, 1, 1, 1);
#endif
#ifdef SYSVMSG
static void
bsd_to_svr4_msqid_ds(bds, sds)
const struct msqid_ds *bds;
struct svr4_msqid_ds *sds;
{
bzero(sds, sizeof(*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_rtime = bds->msg_rtime;
sds->msg_ctime = bds->msg_ctime;
}
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_rtime = sds->msg_rtime;
bds->msg_ctime = sds->msg_ctime;
}
struct svr4_sys_msgsnd_args {
int what;
int msqid;
void * msgp;
size_t msgsz;
int msgflg;
};
static int
svr4_msgsnd(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_msgsnd_args *uap = v;
struct msgsnd_args ap;
ap.msqid = uap->msqid;
ap.msgp = uap->msgp;
ap.msgsz = uap->msgsz;
ap.msgflg = uap->msgflg;
return sys_msgsnd(td, &ap);
}
struct svr4_sys_msgrcv_args {
int what;
int msqid;
void * msgp;
size_t msgsz;
long msgtyp;
int msgflg;
};
static int
svr4_msgrcv(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_msgrcv_args *uap = v;
struct msgrcv_args ap;
ap.msqid = uap->msqid;
ap.msgp = uap->msgp;
ap.msgsz = uap->msgsz;
ap.msgtyp = uap->msgtyp;
ap.msgflg = uap->msgflg;
return sys_msgrcv(td, &ap);
}
struct svr4_sys_msgget_args {
int what;
svr4_key_t key;
int msgflg;
};
static int
svr4_msgget(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_msgget_args *uap = v;
struct msgget_args ap;
ap.key = uap->key;
ap.msgflg = uap->msgflg;
return sys_msgget(td, &ap);
}
struct svr4_sys_msgctl_args {
int what;
int msqid;
int cmd;
struct svr4_msqid_ds * buf;
};
static int
svr4_msgctl(td, v)
struct thread *td;
void *v;
{
struct svr4_sys_msgctl_args *uap = v;
struct svr4_msqid_ds ss;
struct msqid_ds bs;
int error;
switch (uap->cmd) {
case SVR4_IPC_STAT:
error = kern_msgctl(td, uap->msqid, IPC_STAT, &bs);
if (error)
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 sys_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 sys_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 sys_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 */