341 lines
8.7 KiB
C
341 lines
8.7 KiB
C
/* $NetBSD: linux_ipccall.c,v 1.26 2005/12/11 12:20:19 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Frank van der Linden and Eric Haszlakiewicz.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: linux_ipccall.c,v 1.26 2005/12/11 12:20:19 christos Exp $");
|
|
|
|
#if defined(_KERNEL_OPT)
|
|
#include "opt_sysv.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/shm.h>
|
|
#include <sys/sem.h>
|
|
#include <sys/msg.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
|
|
/* real syscalls */
|
|
#include <sys/mount.h>
|
|
#include <sys/sa.h>
|
|
#include <sys/syscallargs.h>
|
|
|
|
/* sys_ipc + args prototype */
|
|
#include <compat/linux/common/linux_types.h>
|
|
#include <compat/linux/common/linux_signal.h>
|
|
|
|
#include <compat/linux/linux_syscallargs.h>
|
|
#include <compat/linux/linux_syscall.h>
|
|
|
|
/* general ipc defines */
|
|
#include <compat/linux/common/linux_ipc.h>
|
|
|
|
/* prototypes for real/normal linux-emul syscalls */
|
|
#include <compat/linux/common/linux_msg.h>
|
|
#include <compat/linux/common/linux_shm.h>
|
|
#include <compat/linux/common/linux_sem.h>
|
|
|
|
/* prototypes for sys_ipc stuff */
|
|
#include <compat/linux/common/linux_ipccall.h>
|
|
|
|
/* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */
|
|
/* Not used on: alpha */
|
|
|
|
/*
|
|
* Stuff to deal with the SysV ipc/shm/semaphore interface in Linux.
|
|
* The main difference is, that Linux handles it all via one
|
|
* system call, which has the usual maximum amount of 5 arguments.
|
|
* This results in a kludge for calls that take 6 of them.
|
|
*
|
|
* The SYSV??? options have to be enabled to get the appropriate
|
|
* functions to work.
|
|
*/
|
|
|
|
int
|
|
linux_sys_ipc(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap = v;
|
|
|
|
switch (SCARG(uap, what)) {
|
|
#ifdef SYSVSEM
|
|
case LINUX_SYS_semop:
|
|
return linux_semop(l, uap, retval);
|
|
case LINUX_SYS_semget:
|
|
return linux_semget(l, uap, retval);
|
|
case LINUX_SYS_semctl: {
|
|
struct linux_sys_semctl_args bsa;
|
|
union linux_semun arg;
|
|
int error;
|
|
|
|
SCARG(&bsa, semid) = SCARG(uap, a1);
|
|
SCARG(&bsa, semnum) = SCARG(uap, a2);
|
|
SCARG(&bsa, cmd) = SCARG(uap, a3);
|
|
/* Convert from (union linux_semun *) to (union linux_semun) */
|
|
if ((error = copyin(SCARG(uap, ptr), &arg, sizeof arg)))
|
|
return error;
|
|
SCARG(&bsa, arg) = arg;
|
|
|
|
return linux_sys_semctl(l, &bsa, retval);
|
|
}
|
|
#endif
|
|
#ifdef SYSVMSG
|
|
case LINUX_SYS_msgsnd:
|
|
return linux_msgsnd(l, uap, retval);
|
|
case LINUX_SYS_msgrcv:
|
|
return linux_msgrcv(l, uap, retval);
|
|
case LINUX_SYS_msgget:
|
|
return linux_msgget(l, uap, retval);
|
|
case LINUX_SYS_msgctl: {
|
|
struct linux_sys_msgctl_args bsa;
|
|
|
|
SCARG(&bsa, msqid) = SCARG(uap, a1);
|
|
SCARG(&bsa, cmd) = SCARG(uap, a2);
|
|
SCARG(&bsa, buf) = (struct linux_msqid_ds *)SCARG(uap, ptr);
|
|
|
|
return linux_sys_msgctl(l, &bsa, retval);
|
|
}
|
|
#endif
|
|
#ifdef SYSVSHM
|
|
case LINUX_SYS_shmat: {
|
|
struct linux_sys_shmat_args bsa;
|
|
|
|
SCARG(&bsa, shmid) = SCARG(uap, a1);
|
|
SCARG(&bsa, shmaddr) = (void *)SCARG(uap, ptr);
|
|
SCARG(&bsa, shmflg) = SCARG(uap, a2);
|
|
/* XXX passing pointer inside int here */
|
|
SCARG(&bsa, raddr) = (u_long *)SCARG(uap, a3);
|
|
|
|
return linux_sys_shmat(l, &bsa, retval);
|
|
}
|
|
case LINUX_SYS_shmdt:
|
|
return linux_shmdt(l, uap, retval);
|
|
case LINUX_SYS_shmget:
|
|
return linux_shmget(l, uap, retval);
|
|
case LINUX_SYS_shmctl: {
|
|
struct linux_sys_shmctl_args bsa;
|
|
|
|
SCARG(&bsa, shmid) = SCARG(uap, a1);
|
|
SCARG(&bsa, cmd) = SCARG(uap, a2);
|
|
SCARG(&bsa, buf) = (struct linux_shmid_ds *)SCARG(uap, ptr);
|
|
|
|
return linux_sys_shmctl(l, &bsa, retval);
|
|
}
|
|
#endif
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
}
|
|
|
|
#ifdef SYSVSEM
|
|
inline int
|
|
linux_semop(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_semop_args bsa;
|
|
|
|
SCARG(&bsa, semid) = SCARG(uap, a1);
|
|
SCARG(&bsa, sops) = (struct sembuf *)SCARG(uap, ptr);
|
|
SCARG(&bsa, nsops) = SCARG(uap, a2);
|
|
|
|
return sys_semop(l, &bsa, retval);
|
|
}
|
|
|
|
inline int
|
|
linux_semget(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_semget_args bsa;
|
|
|
|
SCARG(&bsa, key) = (key_t)SCARG(uap, a1);
|
|
SCARG(&bsa, nsems) = SCARG(uap, a2);
|
|
SCARG(&bsa, semflg) = SCARG(uap, a3);
|
|
|
|
return sys_semget(l, &bsa, retval);
|
|
}
|
|
|
|
#endif /* SYSVSEM */
|
|
|
|
#ifdef SYSVMSG
|
|
|
|
inline int
|
|
linux_msgsnd(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_msgsnd_args bma;
|
|
|
|
SCARG(&bma, msqid) = SCARG(uap, a1);
|
|
SCARG(&bma, msgp) = SCARG(uap, ptr);
|
|
SCARG(&bma, msgsz) = SCARG(uap, a2);
|
|
SCARG(&bma, msgflg) = SCARG(uap, a3);
|
|
|
|
return sys_msgsnd(l, &bma, retval);
|
|
}
|
|
|
|
inline int
|
|
linux_msgrcv(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_msgrcv_args bma;
|
|
struct linux_msgrcv_msgarg kluge;
|
|
int error;
|
|
|
|
if ((error = copyin(SCARG(uap, ptr), &kluge, sizeof kluge)))
|
|
return error;
|
|
|
|
SCARG(&bma, msqid) = SCARG(uap, a1);
|
|
SCARG(&bma, msgp) = kluge.msg;
|
|
SCARG(&bma, msgsz) = SCARG(uap, a2);
|
|
SCARG(&bma, msgtyp) = kluge.type;
|
|
SCARG(&bma, msgflg) = SCARG(uap, a3);
|
|
|
|
return sys_msgrcv(l, &bma, retval);
|
|
}
|
|
|
|
inline int
|
|
linux_msgget(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_msgget_args bma;
|
|
|
|
SCARG(&bma, key) = (key_t)SCARG(uap, a1);
|
|
SCARG(&bma, msgflg) = SCARG(uap, a2);
|
|
|
|
return sys_msgget(l, &bma, retval);
|
|
}
|
|
|
|
#endif /* SYSVMSG */
|
|
|
|
#ifdef SYSVSHM
|
|
/*
|
|
* shmdt(): this could have been mapped directly, if it wasn't for
|
|
* the extra indirection by the linux_ipc system call.
|
|
*/
|
|
inline int
|
|
linux_shmdt(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_shmdt_args bsa;
|
|
|
|
SCARG(&bsa, shmaddr) = SCARG(uap, ptr);
|
|
|
|
return sys_shmdt(l, &bsa, retval);
|
|
}
|
|
|
|
/*
|
|
* Same story as shmdt.
|
|
*/
|
|
inline int
|
|
linux_shmget(l, uap, retval)
|
|
struct lwp *l;
|
|
struct linux_sys_ipc_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(int) a1;
|
|
syscallarg(int) a2;
|
|
syscallarg(int) a3;
|
|
syscallarg(caddr_t) ptr;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct sys_shmget_args bsa;
|
|
|
|
SCARG(&bsa, key) = SCARG(uap, a1);
|
|
SCARG(&bsa, size) = SCARG(uap, a2);
|
|
SCARG(&bsa, shmflg) = SCARG(uap, a3);
|
|
|
|
return linux_sys_shmget(l, &bsa, retval);
|
|
}
|
|
|
|
#endif /* SYSVSHM */
|