NetBSD/sys/compat/common/kern_sig_13.c

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/* $NetBSD: kern_sig_13.c,v 1.2 1997/11/29 18:39:46 kleink Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Klaus Klein.
*
* 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/param.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <machine/limits.h>
#include <compat/common/compat_util.h>
int
compat_13_sys_sigaltstack(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys___sigaltstack14_args ua;
struct compat_13_sys_sigaltstack_args /* {
syscallarg(const struct sigaltstack13 *) nss;
syscallarg(struct sigaltstack13 *) oss;
} */ *uap = v;
struct sigaltstack13 tmp13;
struct sigaltstack tmp, *nssp, *ossp;
caddr_t sg;
int error;
sg = stackgap_init(p->p_emul);
if (SCARG(uap, nss) != NULL) {
error = copyin(SCARG(uap, nss), &tmp13,
sizeof(struct sigaltstack13));
if (error != 0)
return (error);
tmp.ss_sp = tmp13.ss_sp;
tmp.ss_size = tmp13.ss_size;
tmp.ss_flags = tmp13.ss_flags;
nssp = stackgap_alloc(&sg, sizeof(struct sigaltstack));
error = copyout(&tmp, nssp, sizeof(struct sigaltstack));
if (error != 0)
return (error);
} else
nssp = NULL;
if (SCARG(uap, oss) != NULL)
ossp = stackgap_alloc(&sg, sizeof(struct sigaltstack));
else
ossp = NULL;
SCARG(&ua, nss) = nssp;
SCARG(&ua, oss) = ossp;
error = sys___sigaltstack14(p, &ua, retval);
if (error != 0)
return (error);
if (SCARG(uap, oss) != NULL) {
error = copyin(SCARG(&ua, oss), &tmp,
sizeof(struct sigaltstack));
if (error != 0)
return (error);
tmp13.ss_sp = tmp.ss_sp;
if (tmp.ss_size > INT_MAX)
tmp13.ss_size = INT_MAX;
else
tmp13.ss_size = tmp.ss_size;
tmp13.ss_flags = tmp.ss_flags;
error = copyout(&tmp13, SCARG(uap, oss),
sizeof(struct sigaltstack13));
if (error != 0)
return (error);
}
return (0);
}