1 /* $NetBSD: kern_sig_13.c,v 1.11 2005/12/11 12:19:56 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: kern_sig_13.c,v 1.11 2005/12/11 12:19:56 christos Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/proc.h> 44 #include <sys/signal.h> 45 #include <sys/signalvar.h> 46 #include <sys/systm.h> 47 48 #include <sys/mount.h> 49 #include <sys/sa.h> 50 #include <sys/syscallargs.h> 51 52 #include <machine/limits.h> 53 54 #include <compat/sys/signal.h> 55 #include <compat/sys/signalvar.h> 56 #include <compat/common/compat_util.h> 57 58 void 59 native_sigset13_to_sigset(oss, ss) 60 const sigset13_t *oss; 61 sigset_t *ss; 62 { 63 64 ss->__bits[0] = *oss; 65 ss->__bits[1] = 0; 66 ss->__bits[2] = 0; 67 ss->__bits[3] = 0; 68 } 69 70 void 71 native_sigset_to_sigset13(ss, oss) 72 const sigset_t *ss; 73 sigset13_t *oss; 74 { 75 76 *oss = ss->__bits[0]; 77 } 78 79 void 80 native_sigaction13_to_sigaction(osa, sa) 81 const struct sigaction13 *osa; 82 struct sigaction *sa; 83 { 84 85 sa->sa_handler = osa->osa_handler; 86 native_sigset13_to_sigset(&osa->osa_mask, &sa->sa_mask); 87 sa->sa_flags = osa->osa_flags; 88 } 89 90 void 91 native_sigaction_to_sigaction13(sa, osa) 92 const struct sigaction *sa; 93 struct sigaction13 *osa; 94 { 95 96 osa->osa_handler = sa->sa_handler; 97 native_sigset_to_sigset13(&sa->sa_mask, &osa->osa_mask); 98 osa->osa_flags = sa->sa_flags; 99 } 100 101 void 102 native_sigaltstack13_to_sigaltstack(osa, sa) 103 const struct sigaltstack13 *osa; 104 struct sigaltstack *sa; 105 { 106 107 sa->ss_sp = osa->ss_sp; 108 sa->ss_size = osa->ss_size; 109 sa->ss_flags = osa->ss_flags; 110 } 111 112 void 113 native_sigaltstack_to_sigaltstack13(sa, osa) 114 const struct sigaltstack *sa; 115 struct sigaltstack13 *osa; 116 { 117 118 osa->ss_sp = sa->ss_sp; 119 osa->ss_size = sa->ss_size; 120 osa->ss_flags = sa->ss_flags; 121 } 122 123 int 124 compat_13_sys_sigaltstack(struct lwp *l, void *v, register_t *retval) 125 { 126 struct compat_13_sys_sigaltstack_args /* { 127 syscallarg(const struct sigaltstack13 *) nss; 128 syscallarg(struct sigaltstack13 *) oss; 129 } */ *uap = v; 130 struct proc *p = l->l_proc; 131 struct sigaltstack13 ness, oess; 132 struct sigaltstack nbss, obss; 133 int error; 134 135 if (SCARG(uap, nss)) { 136 error = copyin(SCARG(uap, nss), &ness, sizeof(ness)); 137 if (error) 138 return (error); 139 native_sigaltstack13_to_sigaltstack(&ness, &nbss); 140 } 141 error = sigaltstack1(p, 142 SCARG(uap, nss) ? &nbss : 0, SCARG(uap, oss) ? &obss : 0); 143 if (error) 144 return (error); 145 if (SCARG(uap, oss)) { 146 native_sigaltstack_to_sigaltstack13(&obss, &oess); 147 error = copyout(&oess, SCARG(uap, oss), sizeof(oess)); 148 if (error) 149 return (error); 150 } 151 return (0); 152 } 153 154 int 155 compat_13_sys_sigaction(struct lwp *l, void *v, register_t *retval) 156 { 157 struct compat_13_sys_sigaction_args /* { 158 syscallarg(int) signum; 159 syscallarg(const struct sigaction13 *) nsa; 160 syscallarg(struct sigaction13 *) osa; 161 } */ *uap = v; 162 struct proc *p = l->l_proc; 163 struct sigaction13 nesa, oesa; 164 struct sigaction nbsa, obsa; 165 int error; 166 167 if (SCARG(uap, nsa)) { 168 error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa)); 169 if (error) 170 return (error); 171 native_sigaction13_to_sigaction(&nesa, &nbsa); 172 } 173 error = sigaction1(p, SCARG(uap, signum), 174 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0, 175 NULL, 0); 176 if (error) 177 return (error); 178 if (SCARG(uap, osa)) { 179 native_sigaction_to_sigaction13(&obsa, &oesa); 180 error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa)); 181 if (error) 182 return (error); 183 } 184 return (0); 185 } 186 187 int 188 compat_13_sys_sigprocmask(struct lwp *l, void *v, register_t *retval) 189 { 190 struct compat_13_sys_sigprocmask_args /* { 191 syscallarg(int) how; 192 syscallarg(int) mask; 193 } */ *uap = v; 194 struct proc *p = l->l_proc; 195 sigset13_t ness, oess; 196 sigset_t nbss, obss; 197 int error; 198 199 ness = SCARG(uap, mask); 200 native_sigset13_to_sigset(&ness, &nbss); 201 error = sigprocmask1(p, SCARG(uap, how), &nbss, &obss); 202 if (error) 203 return (error); 204 native_sigset_to_sigset13(&obss, &oess); 205 *retval = oess; 206 return (0); 207 } 208 209 int 210 compat_13_sys_sigpending(struct lwp *l, void *v, register_t *retval) 211 { 212 struct proc *p = l->l_proc; 213 sigset13_t ess; 214 sigset_t bss; 215 216 sigpending1(p, &bss); 217 native_sigset_to_sigset13(&bss, &ess); 218 *retval = ess; 219 return (0); 220 } 221 222 int 223 compat_13_sys_sigsuspend(struct lwp *l, void *v, register_t *retval) 224 { 225 struct compat_13_sys_sigsuspend_args /* { 226 syscallarg(sigset13_t) mask; 227 } */ *uap = v; 228 struct proc *p = l->l_proc; 229 sigset13_t ess; 230 sigset_t bss; 231 232 ess = SCARG(uap, mask); 233 native_sigset13_to_sigset(&ess, &bss); 234 return (sigsuspend1(p, &bss)); 235 } 236