NetBSD/sys/compat/common/sysv_sem_14.c

143 lines
4.1 KiB
C

/* $NetBSD: sysv_sem_14.c,v 1.11 2007/02/09 21:55:16 ad Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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: sysv_sem_14.c,v 1.11 2007/02/09 21:55:16 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signal.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/sem.h>
#ifndef SYSVSEM
#define SYSVSEM
#endif
#include <sys/syscallargs.h>
#include <compat/sys/sem.h>
static void semid_ds14_to_native __P((struct semid_ds14 *, struct semid_ds *));
static void native_to_semid_ds14 __P((struct semid_ds *, struct semid_ds14 *));
static void
semid_ds14_to_native(osembuf, sembuf)
struct semid_ds14 *osembuf;
struct semid_ds *sembuf;
{
ipc_perm14_to_native(&osembuf->sem_perm, &sembuf->sem_perm);
#define CVT(x) sembuf->x = osembuf->x
CVT(sem_nsems);
CVT(sem_otime);
CVT(sem_ctime);
#undef CVT
}
static void
native_to_semid_ds14(sembuf, osembuf)
struct semid_ds *sembuf;
struct semid_ds14 *osembuf;
{
native_to_ipc_perm14(&sembuf->sem_perm, &osembuf->sem_perm);
#define CVT(x) osembuf->x = sembuf->x
CVT(sem_nsems);
CVT(sem_otime);
CVT(sem_ctime);
#undef CVT
}
int
compat_14_sys___semctl(struct lwp *l, void *v, register_t *retval)
{
struct compat_14_sys___semctl_args /* {
syscallarg(int) semid;
syscallarg(int) semnum;
syscallarg(int) cmd;
syscallarg(union __semun *) arg;
} */ *uap = v;
union __semun arg;
struct semid_ds sembuf;
struct semid_ds14 osembuf;
int cmd, error;
void *pass_arg = NULL;
cmd = SCARG(uap, cmd);
switch (cmd) {
case IPC_SET:
case IPC_STAT:
pass_arg = &sembuf;
break;
case GETALL:
case SETVAL:
case SETALL:
pass_arg = &arg;
break;
}
if (pass_arg != NULL) {
error = copyin(SCARG(uap, arg), &arg, sizeof(arg));
if (error)
return (error);
if (cmd == IPC_SET) {
error = copyin(arg.buf, &osembuf, sizeof(osembuf));
if (error)
return (error);
semid_ds14_to_native(&osembuf, &sembuf);
}
}
error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd,
pass_arg, retval);
if (error == 0 && cmd == IPC_STAT) {
native_to_semid_ds14(&sembuf, &osembuf);
error = copyout(&osembuf, arg.buf, sizeof(osembuf));
}
return (error);
}