/* $NetBSD: darwin_signal.c,v 1.30 2008/07/02 19:49:58 rmind 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. * * 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 1.30 2008/07/02 19:49:58 rmind 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/syscallargs.h> #include <compat/sys/signal.h> #include <compat/sys/signalvar.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(struct lwp *l, const struct darwin_sys_sigaction_args *uap, register_t *retval) { /* { syscallarg(int) signum; syscallarg(struct darwin___sigaction *) nsa; syscallarg(struct sigaction13 *) osa; } */ struct darwin___sigaction dsa; struct sigaction nsa, osa; struct sigaction13 sa13; int error; if ((error = copyin(SCARG(uap, nsa), &dsa, sizeof(dsa))) != 0) return error; nsa.sa_handler = dsa.darwin_sa_handler.__sa_handler; native_sigset13_to_sigset(&dsa.darwin_sa_mask, &nsa.sa_mask); if (dsa.darwin_sa_flags & ~DARWIN_SA_ALLBITS) { DPRINTF(("darwin_sys_sigaction: ignoring bits (flags = %x)\n", dsa.darwin_sa_flags)); } nsa.sa_flags = dsa.darwin_sa_flags & DARWIN_SA_ALLBITS; error = sigaction1(l, SCARG(uap, signum), &nsa, &osa, dsa.darwin_sa_tramp, 1); if (error != 0) return error; if (SCARG(uap, osa) == NULL) return 0; /* XXX: The returned structure has a different type to that supplied */ sa13.osa_handler = osa.sa_handler; sa13.osa_mask = osa.sa_mask.__bits[0]; native_sigset_to_sigset13(&osa.sa_mask, &sa13.osa_mask); sa13.osa_flags = osa.sa_flags; return copyout(&sa13, SCARG(uap, osa), sizeof(sa13)); } void darwin_trapsignal(struct lwp *l, struct ksiginfo *ksi) { if (mach_trapsignal1(l, ksi) != 0) trapsignal(l, ksi); return; } int darwin_tracesig(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 = LIST_FIRST(&p->p_lwps); KASSERT(l != NULL); error = mach_exception(l, MACH_EXC_SOFTWARE, code); /* Inhibit normal signal delivery */ return EINVAL; } int darwin_sys_sigprocmask(struct lwp *l, const struct darwin_sys_sigprocmask_args *uap, register_t *retval) { /* { syscallarg(int) how; syscallarg(sigset13_t *) set; syscallarg(sigset13_t *) oset; } */ int error; sigset13_t kdset; sigset_t kbset, kboset; if (SCARG(uap, set) != NULL) { error = copyin(SCARG(uap, set), &kdset, sizeof(kdset)); if (error != 0) return error; native_sigset13_to_sigset(&kdset, &kbset); error = sigprocmask1(l, SCARG(uap, how), &kbset, &kboset); } else error = sigprocmask1(l, SCARG(uap, how), NULL, &kboset); if (SCARG(uap, oset) == NULL || error != 0) return error; native_sigset_to_sigset13(&kboset, &kdset); return copyout(&kdset, SCARG(uap, oset), sizeof(kdset)); } void native_to_darwin_siginfo(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_value, sizeof(dsi->darwin_si_value)); dsi->darwin_si_band = ksi->ksi_band; return; }