kern_sig_43.c revision 1.8
1 /* $NetBSD: kern_sig_43.c,v 1.8 1998/07/05 08:49:44 jonathan Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)kern_sig.c 8.7 (Berkeley) 4/18/94 41 */ 42 43 #include "opt_compat_netbsd.h" 44 45 #include <sys/param.h> 46 #include <sys/signalvar.h> 47 #include <sys/resourcevar.h> 48 #include <sys/namei.h> 49 #include <sys/vnode.h> 50 #include <sys/proc.h> 51 #include <sys/systm.h> 52 #include <sys/timeb.h> 53 #include <sys/times.h> 54 #include <sys/buf.h> 55 #include <sys/acct.h> 56 #include <sys/file.h> 57 #include <sys/kernel.h> 58 #include <sys/wait.h> 59 #include <sys/ktrace.h> 60 #include <sys/syslog.h> 61 #include <sys/stat.h> 62 #include <sys/core.h> 63 64 #include <sys/mount.h> 65 #include <sys/syscallargs.h> 66 67 #include <machine/cpu.h> 68 69 #include <vm/vm.h> 70 #include <sys/user.h> /* for coredump */ 71 72 int 73 compat_43_sys_sigblock(p, v, retval) 74 register struct proc *p; 75 void *v; 76 register_t *retval; 77 { 78 struct compat_43_sys_sigblock_args /* { 79 syscallarg(int) mask; 80 } */ *uap = v; 81 82 (void) splhigh(); 83 *retval = p->p_sigmask; 84 p->p_sigmask |= SCARG(uap, mask) &~ sigcantmask; 85 (void) spl0(); 86 return (0); 87 } 88 89 90 int 91 compat_43_sys_sigsetmask(p, v, retval) 92 struct proc *p; 93 void *v; 94 register_t *retval; 95 { 96 struct compat_43_sys_sigsetmask_args /* { 97 syscallarg(int) mask; 98 } */ *uap = v; 99 100 (void) splhigh(); 101 *retval = p->p_sigmask; 102 p->p_sigmask = SCARG(uap, mask) &~ sigcantmask; 103 (void) spl0(); 104 return (0); 105 } 106 107 108 /* ARGSUSED */ 109 int 110 compat_43_sys_sigstack(p, v, retval) 111 struct proc *p; 112 void *v; 113 register_t *retval; 114 { 115 register struct compat_43_sys_sigstack_args /* { 116 syscallarg(struct sigstack *) nss; 117 syscallarg(struct sigstack *) oss; 118 } */ *uap = v; 119 struct sigstack ss; 120 struct sigacts *psp; 121 int error = 0; 122 123 psp = p->p_sigacts; 124 ss.ss_sp = psp->ps_sigstk.ss_sp; 125 ss.ss_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 126 if (SCARG(uap, oss) && (error = copyout((caddr_t)&ss, 127 (caddr_t)SCARG(uap, oss), sizeof (struct sigstack)))) 128 return (error); 129 if (SCARG(uap, nss) == 0) 130 return (0); 131 error = copyin((caddr_t)SCARG(uap, nss), (caddr_t)&ss, 132 sizeof (ss)); 133 if (error) 134 return (error); 135 psp->ps_flags |= SAS_ALTSTACK; 136 psp->ps_sigstk.ss_sp = ss.ss_sp; 137 psp->ps_sigstk.ss_size = 0; 138 psp->ps_sigstk.ss_flags |= ss.ss_onstack & SS_ONSTACK; 139 return (0); 140 } 141 142 /* 143 * Generalized interface signal handler, 4.3-compatible. 144 */ 145 /* ARGSUSED */ 146 int 147 compat_43_sys_sigvec(p, v, retval) 148 struct proc *p; 149 void *v; 150 register_t *retval; 151 { 152 register struct compat_43_sys_sigvec_args /* { 153 syscallarg(int) signum; 154 syscallarg(struct sigvec *) nsv; 155 syscallarg(struct sigvec *) osv; 156 } */ *uap = v; 157 struct sigvec vec; 158 register struct sigacts *ps = p->p_sigacts; 159 register struct sigvec *sv; 160 register int signum; 161 int bit, error; 162 163 signum = SCARG(uap, signum); 164 if (signum <= 0 || signum >= NSIG || 165 signum == SIGKILL || signum == SIGSTOP) 166 return (EINVAL); 167 sv = &vec; 168 if (SCARG(uap, osv)) { 169 *(sig_t *)&sv->sv_handler = ps->ps_sigact[signum]; 170 sv->sv_mask = ps->ps_catchmask[signum]; 171 bit = sigmask(signum); 172 sv->sv_flags = 0; 173 if ((ps->ps_sigonstack & bit) != 0) 174 sv->sv_flags |= SV_ONSTACK; 175 if ((ps->ps_sigintr & bit) != 0) 176 sv->sv_flags |= SV_INTERRUPT; 177 if ((ps->ps_sigreset & bit) != 0) 178 sv->sv_flags |= SV_RESETHAND; 179 if (p->p_flag & P_NOCLDSTOP) 180 sv->sv_flags |= SA_NOCLDSTOP; 181 sv->sv_mask &= ~bit; 182 error = copyout((caddr_t)sv, (caddr_t)SCARG(uap, osv), 183 sizeof (vec)); 184 if (error) 185 return (error); 186 } 187 if (SCARG(uap, nsv)) { 188 error = copyin((caddr_t)SCARG(uap, nsv), (caddr_t)sv, 189 sizeof (vec)); 190 if (error) 191 return (error); 192 sv->sv_flags ^= SA_RESTART; /* opposite of SV_INTERRUPT */ 193 setsigvec(p, signum, (struct sigaction *)sv); 194 } 195 return (0); 196 } 197 198 199 /* ARGSUSED */ 200 int 201 compat_43_sys_killpg(p, v, retval) 202 struct proc *p; 203 void *v; 204 register_t *retval; 205 { 206 register struct compat_43_sys_killpg_args /* { 207 syscallarg(int) pgid; 208 syscallarg(int) signum; 209 } */ *uap = v; 210 211 #ifdef COMPAT_09 212 SCARG(uap, pgid) = (short) SCARG(uap, pgid); 213 #endif 214 215 if ((u_int)SCARG(uap, signum) >= NSIG) 216 return (EINVAL); 217 return (killpg1(p, SCARG(uap, signum), SCARG(uap, pgid), 0)); 218 } 219
Indexes created Tue Sep 23 14:10:03 GMT 2025