/*-
* Copyright (c) 1994-1995 Søren Schmidt
* 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
* in this position and unchanged.
* 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 withough 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/proc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <i386/linux/linux.h>
#include <i386/linux/linux_proto.h>
#include <i386/linux/linux_util.h>
static int linux_semop __P((struct proc *, struct linux_ipc_args *));
static int linux_semget __P((struct proc *, struct linux_ipc_args *));
static int linux_semctl __P((struct proc *, struct linux_ipc_args *));
static int linux_msgsnd __P((struct proc *, struct linux_ipc_args *));
static int linux_msgrcv __P((struct proc *, struct linux_ipc_args *));
static int linux_msgctl __P((struct proc *, struct linux_ipc_args *));
static int linux_shmat __P((struct proc *, struct linux_ipc_args *));
static int linux_shmdt __P((struct proc *, struct linux_ipc_args *));
static int linux_shmget __P((struct proc *, struct linux_ipc_args *));
static int linux_shmctl __P((struct proc *, struct linux_ipc_args *));
struct linux_ipc_perm {
linux_key_t key;
unsigned short uid;
unsigned short gid;
unsigned short cuid;
unsigned short cgid;
unsigned short mode;
unsigned short seq;
};
static void
linux_to_bsd_ipc_perm(struct linux_ipc_perm *lpp, struct ipc_perm *bpp)
{
bpp->key = lpp->key;
bpp->uid = lpp->uid;
bpp->gid = lpp->gid;
bpp->cuid = lpp->cuid;
bpp->cgid = lpp->cgid;
bpp->mode = lpp->mode;
bpp->seq = lpp->seq;
}
static void
bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct linux_ipc_perm *lpp)
{
lpp->key = bpp->key;
lpp->uid = bpp->uid;
lpp->gid = bpp->gid;
lpp->cuid = bpp->cuid;
lpp->cgid = bpp->cgid;
lpp->mode = bpp->mode;
lpp->seq = bpp->seq;
}
struct linux_semid_ds {
struct linux_ipc_perm sem_perm;
linux_time_t sem_otime;
linux_time_t sem_ctime;
void *sem_base;
void *sem_pending;
void *sem_pending_last;
void *undo;
ushort sem_nsems;
};
struct linux_shmid_ds {
struct linux_ipc_perm shm_perm;
int shm_segsz;
linux_time_t shm_atime;
linux_time_t shm_dtime;
linux_time_t shm_ctime;
ushort shm_cpid;
ushort shm_lpid;
short shm_nattch;
ushort private1;
void *private2;
void *private3;
};
static void
linux_to_bsd_semid_ds(struct linux_semid_ds *lsp, struct semid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
bsp->sem_otime = lsp->sem_otime;
bsp->sem_ctime = lsp->sem_ctime;
bsp->sem_nsems = lsp->sem_nsems;
bsp->sem_base = lsp->sem_base;
}
static void
bsd_to_linux_semid_ds(struct semid_ds *bsp, struct linux_semid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
lsp->sem_otime = bsp->sem_otime;
lsp->sem_ctime = bsp->sem_ctime;
lsp->sem_nsems = bsp->sem_nsems;
lsp->sem_base = bsp->sem_base;
}
static void
linux_to_bsd_shmid_ds(struct linux_shmid_ds *lsp, struct shmid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
bsp->shm_segsz = lsp->shm_segsz;
bsp->shm_lpid = lsp->shm_lpid;
bsp->shm_cpid = lsp->shm_cpid;
bsp->shm_nattch = lsp->shm_nattch;
bsp->shm_atime = lsp->shm_atime;
bsp->shm_dtime = lsp->shm_dtime;
bsp->shm_ctime = lsp->shm_ctime;
bsp->shm_internal = lsp->private3; /* this goes (yet) SOS */
}
static void
bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct linux_shmid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
lsp->shm_segsz = bsp->shm_segsz;
lsp->shm_lpid = bsp->shm_lpid;
lsp->shm_cpid = bsp->shm_cpid;
lsp->shm_nattch = bsp->shm_nattch;
lsp->shm_atime = bsp->shm_atime;
lsp->shm_dtime = bsp->shm_dtime;
lsp->shm_ctime = bsp->shm_ctime;
lsp->private3 = bsp->shm_internal; /* this goes (yet) SOS */
}
static int
linux_semop(struct proc *p, struct linux_ipc_args *args)
{
struct semop_args /* {
int semid;
struct sembuf *sops;
int nsops;
} */ bsd_args;
bsd_args.semid = args->arg1;
bsd_args.sops = (struct sembuf *)args->ptr;
bsd_args.nsops = args->arg2;
return semop(p, &bsd_args);
}
static int
linux_semget(struct proc *p, struct linux_ipc_args *args)
{
struct semget_args /* {
key_t key;
int nsems;
int semflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.nsems = args->arg2;
bsd_args.semflg = args->arg3;
return semget(p, &bsd_args);
}
static int
linux_semctl(struct proc *p, struct linux_ipc_args *args)
{
struct linux_semid_ds linux_semid;
struct semid_ds bsd_semid;
struct __semctl_args /* {
int semid;
int semnum;
int cmd;
union semun *arg;
} */ bsd_args;
int error;
caddr_t sg, unptr, dsp, ldsp;
sg = stackgap_init();
bsd_args.semid = args->arg1;
bsd_args.semnum = args->arg2;
bsd_args.cmd = args->arg3;
bsd_args.arg = (union semun *)args->ptr;
switch (args->arg3) {
case LINUX_IPC_RMID:
bsd_args.cmd = IPC_RMID;
break;
case LINUX_GETNCNT:
bsd_args.cmd = GETNCNT;
break;
case LINUX_GETPID:
bsd_args.cmd = GETPID;
break;
case LINUX_GETVAL:
bsd_args.cmd = GETVAL;
break;
case LINUX_GETZCNT:
bsd_args.cmd = GETZCNT;
break;
case LINUX_SETVAL:
bsd_args.cmd = SETVAL;
break;
case LINUX_IPC_SET:
bsd_args.cmd = IPC_SET;
error = copyin(args->ptr, &ldsp, sizeof(ldsp));
if (error)
return error;
error = copyin(ldsp, (caddr_t)&linux_semid, sizeof(linux_semid));
if (error)
return error;
linux_to_bsd_semid_ds(&linux_semid, &bsd_semid);
unptr = stackgap_alloc(&sg, sizeof(union semun));
dsp = stackgap_alloc(&sg, sizeof(struct semid_ds));
error = copyout((caddr_t)&bsd_semid, dsp, sizeof(bsd_semid));
if (error)
return error;
error = copyout((caddr_t)&dsp, unptr, sizeof(dsp));
if (error)
return error;
bsd_args.arg = (union semun *)unptr;
return __semctl(p, &bsd_args);
case LINUX_IPC_STAT:
bsd_args.cmd = IPC_STAT;
unptr = stackgap_alloc(&sg, sizeof(union semun *));
dsp = stackgap_alloc(&sg, sizeof(struct semid_ds));
error = copyout((caddr_t)&dsp, unptr, sizeof(dsp));
if (error)
return error;
bsd_args.arg = (union semun *)unptr;
error = __semctl(p, &bsd_args);
if (error)
return error;
error = copyin(dsp, (caddr_t)&bsd_semid, sizeof(bsd_semid));
if (error)
return error;
bsd_to_linux_semid_ds(&bsd_semid, &linux_semid);
error = copyin(args->ptr, &ldsp, sizeof(ldsp));
if (error)
return error;
return copyout((caddr_t)&linux_semid, ldsp, sizeof(linux_semid));
case LINUX_GETALL:
/* FALLTHROUGH */
case LINUX_SETALL:
/* FALLTHROUGH */
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return EINVAL;
}
return __semctl(p, &bsd_args);
}
static int
linux_msgsnd(struct proc *p, struct linux_ipc_args *args)
{
struct msgsnd_args /* {
int msqid;
void *msgp;
size_t msgsz;
int msgflg;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.msgp = args->ptr;
bsd_args.msgsz = args->arg2;
bsd_args.msgflg = args->arg3;
return msgsnd(p, &bsd_args);
}
static int
linux_msgrcv(struct proc *p, struct linux_ipc_args *args)
{
struct msgrcv_args /* {
int msqid;
void *msgp;
size_t msgsz;
long msgtyp;
int msgflg;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.msgp = args->ptr;
bsd_args.msgsz = args->arg2;
bsd_args.msgtyp = 0;
bsd_args.msgflg = args->arg3;
return msgrcv(p, &bsd_args);
}
static int
linux_msgget(struct proc *p, struct linux_ipc_args *args)
{
struct msgget_args /* {
key_t key;
int msgflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.msgflg = args->arg2;
return msgget(p, &bsd_args);
}
static int
linux_msgctl(struct proc *p, struct linux_ipc_args *args)
{
struct msgctl_args /* {
int msqid;
int cmd;
struct msqid_ds *buf;
} */ bsd_args;
bsd_args.msqid = args->arg1;
bsd_args.cmd = args->arg2;
bsd_args.buf = (struct msqid_ds *)args->ptr;
return msgctl(p, &bsd_args);
}
static int
linux_shmat(struct proc *p, struct linux_ipc_args *args)
{
struct shmat_args /* {
int shmid;
void *shmaddr;
int shmflg;
} */ bsd_args;
int error;
bsd_args.shmid = args->arg1;
bsd_args.shmaddr = args->ptr;
bsd_args.shmflg = args->arg2;
if ((error = shmat(p, &bsd_args)))
return error;
if ((error = copyout(p->p_retval, (caddr_t)args->arg3, sizeof(int))))
return error;
p->p_retval[0] = 0;
return 0;
}
static int
linux_shmdt(struct proc *p, struct linux_ipc_args *args)
{
struct shmdt_args /* {
void *shmaddr;
} */ bsd_args;
bsd_args.shmaddr = args->ptr;
return shmdt(p, &bsd_args);
}
static int
linux_shmget(struct proc *p, struct linux_ipc_args *args)
{
struct shmget_args /* {
key_t key;
int size;
int shmflg;
} */ bsd_args;
bsd_args.key = args->arg1;
bsd_args.size = args->arg2;
bsd_args.shmflg = args->arg3;
return shmget(p, &bsd_args);
}
static int
linux_shmctl(struct proc *p, struct linux_ipc_args *args)
{
struct shmid_ds bsd_shmid;
struct linux_shmid_ds linux_shmid;
struct shmctl_args /* {
int shmid;
int cmd;
struct shmid_ds *buf;
} */ bsd_args;
int error;
caddr_t sg = stackgap_init();
switch (args->arg2) {
case LINUX_IPC_STAT:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_STAT;
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = shmctl(p, &bsd_args)))
return error;
if ((error = copyin((caddr_t)bsd_args.buf, (caddr_t)&bsd_shmid,
sizeof(struct shmid_ds))))
return error;
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return copyout((caddr_t)&linux_shmid, args->ptr, sizeof(linux_shmid));
case LINUX_IPC_SET:
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_SET;
return shmctl(p, &bsd_args);
case LINUX_IPC_RMID:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_RMID;
if (NULL == args->ptr)
bsd_args.buf = NULL;
else {
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
}
return shmctl(p, &bsd_args);
case LINUX_IPC_INFO:
case LINUX_SHM_STAT:
case LINUX_SHM_INFO:
case LINUX_SHM_LOCK:
case LINUX_SHM_UNLOCK:
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return EINVAL;
}
}
int
linux_ipc(struct proc *p, struct linux_ipc_args *args)
{
switch (args->what) {
case LINUX_SEMOP:
return linux_semop(p, args);
case LINUX_SEMGET:
return linux_semget(p, args);
case LINUX_SEMCTL:
return linux_semctl(p, args);
case LINUX_MSGSND:
return linux_msgsnd(p, args);
case LINUX_MSGRCV:
return linux_msgrcv(p, args);
case LINUX_MSGGET:
return linux_msgget(p, args);
case LINUX_MSGCTL:
return linux_msgctl(p, args);
case LINUX_SHMAT:
return linux_shmat(p, args);
case LINUX_SHMDT:
return linux_shmdt(p, args);
case LINUX_SHMGET:
return linux_shmget(p, args);
case LINUX_SHMCTL:
return linux_shmctl(p, args);
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return ENOSYS;
}
}
