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/* $OpenBSD: hpux_sig2.c,v 1.1 2004/09/19 21:56:18 mickey Exp $ */
/*
* Copyright (c) 2004 Michael Shalayeff
* 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.
*
* 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 OR HIS RELATIVES 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 MIND, 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/systm.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/signalvar.h>
#include <sys/syscallargs.h>
#include <compat/hpux/hpux.h>
#include <compat/hpux/hpux_sig.h>
#include <compat/hpux/hpux_util.h>
#include <compat/hpux/hppa/hpux_syscallargs.h>
int
hpux_sys_sigaltstack(struct proc *p, void *v, register_t *retval)
{
struct hpux_sys_sigaltstack_args /* {
syscallarg(struct hpux_sigaltstack *) nss;
syscallarg(struct hpux_sigaltstack *) oss;
} */ *uap = v;
struct sys_sigaltstack_args saa;
hpux_stack_t hsa;
stack_t *psa, sa;
caddr_t sg;
int error;
if ((error = copyin(SCARG(uap, nss), &hsa, sizeof hsa)))
return (error);
sa.ss_sp = hsa.ss_sp;
sa.ss_size = hsa.ss_size;
sa.ss_flags = hsa.ss_flags & SS_ONSTACK;
if (hsa.ss_flags & HPUX_SS_DISABLE)
sa.ss_flags |= SS_DISABLE;
sg = stackgap_init(p->p_emul);
psa = stackgap_alloc(&sg, 2 * sizeof(struct sigaltstack));
SCARG(&saa, nss) = &psa[0];
SCARG(&saa, oss) = &psa[1];
if ((error = copyout(&sa, psa, sizeof sa)))
return (error);
if ((error = sys_sigaltstack(p, &saa, retval)))
return (error);
if ((error = copyin(SCARG(&saa, oss), &sa, sizeof sa)))
return (error);
hsa.ss_sp = sa.ss_sp;
hsa.ss_flags = sa.ss_flags & SS_ONSTACK;
if (sa.ss_flags & SS_DISABLE)
hsa.ss_flags |= HPUX_SS_DISABLE;
hsa.ss_size = sa.ss_size;
return (copyout(&hsa, SCARG(uap, oss), sizeof hsa));
}
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