240 lines
6.7 KiB
C
240 lines
6.7 KiB
C
/* $NetBSD: darwin_signal.c,v 1.17 2003/12/24 23:22:22 manu Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: darwin_signal.c,v 1.17 2003/12/24 23:22:22 manu Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/signal.h>
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#include <sys/sa.h>
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#include <sys/syscallargs.h>
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#include <compat/common/compat_util.h>
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#include <compat/mach/mach_types.h>
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#include <compat/mach/mach_vm.h>
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#include <compat/mach/mach_port.h>
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#include <compat/mach/mach_exception.h>
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#include <compat/darwin/darwin_exec.h>
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#include <compat/darwin/darwin_signal.h>
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#include <compat/darwin/darwin_syscallargs.h>
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int
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darwin_sys_sigaction(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct darwin_sys_sigaction_args /* {
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syscallarg(int) signum;
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syscallarg(struct darwin___sigaction *) nsa;
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syscallarg(struct sigaction13 *) osa;
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} */ *uap = v;
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struct sys___sigaction_sigtramp_args cup;
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struct darwin___sigaction dsa;
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struct sigaction sa;
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struct sigaction *nsa, *osa;
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struct sigaction13 sa13;
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struct proc *p = l->l_proc;
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caddr_t sg = stackgap_init(p, 0);
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int error;
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if ((error = copyin(SCARG(uap, nsa), &dsa, sizeof(dsa))) != 0)
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return error;
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nsa = stackgap_alloc(p, &sg, sizeof(struct sigaction));
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if (SCARG(uap, osa) != NULL)
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osa = stackgap_alloc(p, &sg, sizeof(struct sigaction));
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else
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osa = NULL;
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sa.sa_handler = dsa.darwin_sa_handler.__sa_handler;
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native_sigset13_to_sigset(&dsa.darwin_sa_mask, &sa.sa_mask);
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if (dsa.darwin_sa_flags & ~DARWIN_SA_ALLBITS)
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DPRINTF(("darwin_sys_sigaction: ignoring bits (flags = %x)\n",
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dsa.darwin_sa_flags));
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sa.sa_flags = dsa.darwin_sa_flags & DARWIN_SA_ALLBITS;
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if ((error = copyout(&sa, nsa, sizeof(sa))) != 0)
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return error;
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SCARG(&cup, signum) = SCARG(uap, signum);
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SCARG(&cup, nsa) = nsa;
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if (SCARG(uap, osa) != NULL)
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SCARG(&cup, osa) = osa;
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SCARG(&cup, tramp) = dsa.darwin_sa_tramp;
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SCARG(&cup, vers) = 1;
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if ((error = sys___sigaction_sigtramp(l, &cup, retval)) !=0)
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return error;
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if (SCARG(uap, osa) == NULL)
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return 0;
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if ((error = copyin(SCARG(&cup, osa), &sa, sizeof(sa))) != 0)
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return error;
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sa13.osa_handler = sa.sa_handler;
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sa13.osa_mask = sa.sa_mask.__bits[0];
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native_sigset_to_sigset13(&sa.sa_mask, &sa13.osa_mask);
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sa13.osa_flags = sa.sa_flags;
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if ((error = copyout(&sa13, SCARG(uap, osa), sizeof(sa13))) != 0)
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return error;
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return 0;
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}
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void
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darwin_trapsignal(l, ksi)
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struct lwp *l;
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const struct ksiginfo *ksi;
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{
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if (mach_trapsignal1(l, ksi) != 0)
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trapsignal(l, ksi);
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return;
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}
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int
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darwin_tracesig(p, signo)
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struct proc *p;
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int signo;
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{
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struct darwin_emuldata *ded;
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struct lwp *l;
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int code[2];
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int error;
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/*
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* If the process does not have softsignals,
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* we are done, normal signal delivery should
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* occur.
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*/
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ded = (struct darwin_emuldata *)p->p_emuldata;
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if ((ded->ded_flags & DARWIN_DED_SIGEXC) == 0)
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return 0;
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code[0] = MACH_SOFT_SIGNAL;
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code[1] = signo;
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l = proc_representative_lwp(p);
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error = mach_exception(l, MACH_EXC_SOFTWARE, code);
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/* Inhibit normal signal delivery */
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return EINVAL;
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}
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int
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darwin_sys_sigprocmask(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct darwin_sys_sigprocmask_args /* {
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syscallarg(int) how;
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syscallarg(sigset13_t *) set;
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syscallarg(sigset13_t *) oset;
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} */ *uap = v;
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struct sys___sigprocmask14_args cup;
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struct proc *p = l->l_proc;
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int error;
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sigset13_t kdset, kdoset;
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sigset_t kbset, kboset;
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sigset_t *ubset = NULL;
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sigset_t *uboset = NULL;
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caddr_t sg = stackgap_init(p, 0);
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ubset = stackgap_alloc(p, &sg, sizeof(*ubset));
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if (SCARG(uap, oset) != NULL)
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uboset = stackgap_alloc(p, &sg, sizeof(*uboset));
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if (SCARG(uap, set) != NULL) {
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error = copyin(SCARG(uap, set), &kdset, sizeof(kdset));
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if (error != 0)
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return error;
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native_sigset13_to_sigset(&kdset, &kbset);
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if ((error = copyout(&kbset, ubset, sizeof(kbset))) != 0)
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return error;
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}
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SCARG(&cup, how) = SCARG(uap, how);
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SCARG(&cup, set) = ubset;
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SCARG(&cup, oset) = uboset;
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if ((error = sys___sigprocmask14(l, &cup, retval)) != 0)
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return error;
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if (SCARG(uap, oset) != NULL) {
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if ((error = copyin(uboset, &kboset, sizeof(kboset))) != 0)
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return error;
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native_sigset_to_sigset13(&kboset, &kdoset);
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if ((error = copyout(&kdoset,
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SCARG(uap, oset), sizeof(kdoset))) != 0)
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return error;
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}
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return 0;
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}
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void
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native_to_darwin_siginfo(ksi, dsi)
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const struct ksiginfo *ksi;
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struct darwin___siginfo *dsi;
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{
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dsi->darwin_si_signo = ksi->ksi_signo;
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dsi->darwin_si_errno = ksi->ksi_errno;
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dsi->darwin_si_code = ksi->ksi_code;
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dsi->darwin_si_pid = ksi->ksi_pid;
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dsi->darwin_si_uid = ksi->ksi_uid;
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dsi->darwin_si_status = ksi->ksi_status;
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dsi->darwin_si_addr = ksi->ksi_addr;
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(void)memcpy(&dsi->darwin_si_value,
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&ksi->ksi_sigval, sizeof(dsi->darwin_si_value));
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dsi->darwin_si_band = ksi->ksi_band;
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return;
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}
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