NetBSD/sys/compat/darwin/darwin_signal.c

241 lines
6.8 KiB
C

/* $NetBSD: darwin_signal.c,v 1.18 2004/07/28 22:24:06 manu Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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: darwin_signal.c,v 1.18 2004/07/28 22:24:06 manu Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <sys/sa.h>
#include <sys/syscallargs.h>
#include <compat/common/compat_util.h>
#include <compat/mach/mach_types.h>
#include <compat/mach/mach_vm.h>
#include <compat/mach/mach_port.h>
#include <compat/mach/mach_exception.h>
#include <compat/darwin/darwin_audit.h>
#include <compat/darwin/darwin_exec.h>
#include <compat/darwin/darwin_signal.h>
#include <compat/darwin/darwin_syscallargs.h>
int
darwin_sys_sigaction(l, v, retval)
struct lwp *l;
void *v;
register_t *retval;
{
struct darwin_sys_sigaction_args /* {
syscallarg(int) signum;
syscallarg(struct darwin___sigaction *) nsa;
syscallarg(struct sigaction13 *) osa;
} */ *uap = v;
struct sys___sigaction_sigtramp_args cup;
struct darwin___sigaction dsa;
struct sigaction sa;
struct sigaction *nsa, *osa;
struct sigaction13 sa13;
struct proc *p = l->l_proc;
caddr_t sg = stackgap_init(p, 0);
int error;
if ((error = copyin(SCARG(uap, nsa), &dsa, sizeof(dsa))) != 0)
return error;
nsa = stackgap_alloc(p, &sg, sizeof(struct sigaction));
if (SCARG(uap, osa) != NULL)
osa = stackgap_alloc(p, &sg, sizeof(struct sigaction));
else
osa = NULL;
sa.sa_handler = dsa.darwin_sa_handler.__sa_handler;
native_sigset13_to_sigset(&dsa.darwin_sa_mask, &sa.sa_mask);
if (dsa.darwin_sa_flags & ~DARWIN_SA_ALLBITS)
DPRINTF(("darwin_sys_sigaction: ignoring bits (flags = %x)\n",
dsa.darwin_sa_flags));
sa.sa_flags = dsa.darwin_sa_flags & DARWIN_SA_ALLBITS;
if ((error = copyout(&sa, nsa, sizeof(sa))) != 0)
return error;
SCARG(&cup, signum) = SCARG(uap, signum);
SCARG(&cup, nsa) = nsa;
if (SCARG(uap, osa) != NULL)
SCARG(&cup, osa) = osa;
SCARG(&cup, tramp) = dsa.darwin_sa_tramp;
SCARG(&cup, vers) = 1;
if ((error = sys___sigaction_sigtramp(l, &cup, retval)) !=0)
return error;
if (SCARG(uap, osa) == NULL)
return 0;
if ((error = copyin(SCARG(&cup, osa), &sa, sizeof(sa))) != 0)
return error;
sa13.osa_handler = sa.sa_handler;
sa13.osa_mask = sa.sa_mask.__bits[0];
native_sigset_to_sigset13(&sa.sa_mask, &sa13.osa_mask);
sa13.osa_flags = sa.sa_flags;
if ((error = copyout(&sa13, SCARG(uap, osa), sizeof(sa13))) != 0)
return error;
return 0;
}
void
darwin_trapsignal(l, ksi)
struct lwp *l;
const struct ksiginfo *ksi;
{
if (mach_trapsignal1(l, ksi) != 0)
trapsignal(l, ksi);
return;
}
int
darwin_tracesig(p, signo)
struct proc *p;
int signo;
{
struct darwin_emuldata *ded;
struct lwp *l;
int code[2];
int error;
/*
* If the process does not have softsignals,
* we are done, normal signal delivery should
* occur.
*/
ded = (struct darwin_emuldata *)p->p_emuldata;
if ((ded->ded_flags & DARWIN_DED_SIGEXC) == 0)
return 0;
code[0] = MACH_SOFT_SIGNAL;
code[1] = signo;
l = proc_representative_lwp(p);
error = mach_exception(l, MACH_EXC_SOFTWARE, code);
/* Inhibit normal signal delivery */
return EINVAL;
}
int
darwin_sys_sigprocmask(l, v, retval)
struct lwp *l;
void *v;
register_t *retval;
{
struct darwin_sys_sigprocmask_args /* {
syscallarg(int) how;
syscallarg(sigset13_t *) set;
syscallarg(sigset13_t *) oset;
} */ *uap = v;
struct sys___sigprocmask14_args cup;
struct proc *p = l->l_proc;
int error;
sigset13_t kdset, kdoset;
sigset_t kbset, kboset;
sigset_t *ubset = NULL;
sigset_t *uboset = NULL;
caddr_t sg = stackgap_init(p, 0);
ubset = stackgap_alloc(p, &sg, sizeof(*ubset));
if (SCARG(uap, oset) != NULL)
uboset = stackgap_alloc(p, &sg, sizeof(*uboset));
if (SCARG(uap, set) != NULL) {
error = copyin(SCARG(uap, set), &kdset, sizeof(kdset));
if (error != 0)
return error;
native_sigset13_to_sigset(&kdset, &kbset);
if ((error = copyout(&kbset, ubset, sizeof(kbset))) != 0)
return error;
}
SCARG(&cup, how) = SCARG(uap, how);
SCARG(&cup, set) = ubset;
SCARG(&cup, oset) = uboset;
if ((error = sys___sigprocmask14(l, &cup, retval)) != 0)
return error;
if (SCARG(uap, oset) != NULL) {
if ((error = copyin(uboset, &kboset, sizeof(kboset))) != 0)
return error;
native_sigset_to_sigset13(&kboset, &kdoset);
if ((error = copyout(&kdoset,
SCARG(uap, oset), sizeof(kdoset))) != 0)
return error;
}
return 0;
}
void
native_to_darwin_siginfo(ksi, dsi)
const struct ksiginfo *ksi;
struct darwin___siginfo *dsi;
{
dsi->darwin_si_signo = ksi->ksi_signo;
dsi->darwin_si_errno = ksi->ksi_errno;
dsi->darwin_si_code = ksi->ksi_code;
dsi->darwin_si_pid = ksi->ksi_pid;
dsi->darwin_si_uid = ksi->ksi_uid;
dsi->darwin_si_status = ksi->ksi_status;
dsi->darwin_si_addr = ksi->ksi_addr;
(void)memcpy(&dsi->darwin_si_value,
&ksi->ksi_sigval, sizeof(dsi->darwin_si_value));
dsi->darwin_si_band = ksi->ksi_band;
return;
}