/* $OpenBSD: kern_sig_43.c,v 1.4 2001/02/19 16:54:27 art Exp $ */ /* $NetBSD: kern_sig_43.c,v 1.7 1996/03/14 19:31:47 christos Exp $ */ /* * Copyright (c) 1982, 1986, 1989, 1991, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * 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 University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)kern_sig.c 8.7 (Berkeley) 4/18/94 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for coredump */ int compat_43_sys_sigblock(p, v, retval) register struct proc *p; void *v; register_t *retval; { struct compat_43_sys_sigblock_args /* { syscallarg(int) mask; } */ *uap = v; int s; s = splhigh(); *retval = p->p_sigmask; p->p_sigmask |= SCARG(uap, mask) &~ sigcantmask; splx(s); return (0); } int compat_43_sys_sigsetmask(p, v, retval) struct proc *p; void *v; register_t *retval; { struct compat_43_sys_sigsetmask_args /* { syscallarg(int) mask; } */ *uap = v; int s; s = splhigh(); *retval = p->p_sigmask; p->p_sigmask = SCARG(uap, mask) &~ sigcantmask; splx(s); return (0); } /* ARGSUSED */ int compat_43_sys_sigstack(p, v, retval) struct proc *p; void *v; register_t *retval; { register struct compat_43_sys_sigstack_args /* { syscallarg(struct sigstack *) nss; syscallarg(struct sigstack *) oss; } */ *uap = v; struct sigstack ss; struct sigacts *psp; int error = 0; psp = p->p_sigacts; ss.ss_sp = psp->ps_sigstk.ss_sp; ss.ss_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; if (SCARG(uap, oss) && (error = copyout((caddr_t)&ss, (caddr_t)SCARG(uap, oss), sizeof (struct sigstack)))) return (error); if (SCARG(uap, nss) == 0) return (0); error = copyin((caddr_t)SCARG(uap, nss), (caddr_t)&ss, sizeof (ss)); if (error) return (error); psp->ps_flags |= SAS_ALTSTACK; psp->ps_sigstk.ss_sp = ss.ss_sp; psp->ps_sigstk.ss_size = 0; psp->ps_sigstk.ss_flags |= ss.ss_onstack & SS_ONSTACK; return (0); } /* * Generalized interface signal handler, 4.3-compatible. */ /* ARGSUSED */ int compat_43_sys_sigvec(p, v, retval) struct proc *p; void *v; register_t *retval; { register struct compat_43_sys_sigvec_args /* { syscallarg(int) signum; syscallarg(struct sigvec *) nsv; syscallarg(struct sigvec *) osv; } */ *uap = v; struct sigvec vec; register struct sigacts *ps = p->p_sigacts; register struct sigvec *sv; register int signum; int bit, error; signum = SCARG(uap, signum); if (signum <= 0 || signum >= NSIG || signum == SIGKILL || signum == SIGSTOP) return (EINVAL); sv = &vec; if (SCARG(uap, osv)) { *(sig_t *)&sv->sv_handler = ps->ps_sigact[signum]; sv->sv_mask = ps->ps_catchmask[signum]; bit = sigmask(signum); sv->sv_flags = 0; if ((ps->ps_sigonstack & bit) != 0) sv->sv_flags |= SV_ONSTACK; if ((ps->ps_sigintr & bit) != 0) sv->sv_flags |= SV_INTERRUPT; if ((ps->ps_sigreset & bit) != 0) sv->sv_flags |= SV_RESETHAND; if (p->p_flag & P_NOCLDSTOP) sv->sv_flags |= SA_NOCLDSTOP; sv->sv_mask &= ~bit; error = copyout((caddr_t)sv, (caddr_t)SCARG(uap, osv), sizeof (vec)); if (error) return (error); } if (SCARG(uap, nsv)) { error = copyin((caddr_t)SCARG(uap, nsv), (caddr_t)sv, sizeof (vec)); if (error) return (error); sv->sv_flags ^= SA_RESTART; /* opposite of SV_INTERRUPT */ setsigvec(p, signum, (struct sigaction *)sv); } return (0); } /* ARGSUSED */ int compat_43_sys_killpg(p, v, retval) struct proc *p; void *v; register_t *retval; { register struct compat_43_sys_killpg_args /* { syscallarg(int) pgid; syscallarg(int) signum; } */ *uap = v; #ifdef COMPAT_09 SCARG(uap, pgid) = (short) SCARG(uap, pgid); #endif if ((u_int)SCARG(uap, signum) >= NSIG) return (EINVAL); return (killpg1(p, SCARG(uap, signum), SCARG(uap, pgid), 0)); }