linux_sigaction.c revision 1.14
1/* $NetBSD: linux_sigaction.c,v 1.14 1998/10/01 02:27:34 erh 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 Eric Haszlakiewicz. 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/* 40 * Copyright (c) 1995 Frank van der Linden 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed for the NetBSD Project 54 * by Frank van der Linden 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 * 69 * heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp 70 */ 71 72#include <sys/param.h> 73#include <sys/systm.h> 74#include <sys/proc.h> 75#include <sys/filedesc.h> 76#include <sys/mount.h> 77#include <sys/kernel.h> 78#include <sys/signal.h> 79#include <sys/signalvar.h> 80 81#include <sys/syscallargs.h> 82 83#include <compat/linux/linux_types.h> 84#include <compat/linux/linux_signal.h> 85#include <compat/linux/linux_syscallargs.h> 86#include <compat/linux/linux_util.h> 87 88/* Used on: arm, i386, m68k, mips, ppc */ 89/* Not used on: alpha, sparc, sparc64 */ 90 91/* 92 * The Linux sigaction() system call. Do the usual conversions, 93 * and just call sigaction(). 94 */ 95int 96linux_sys_sigaction(p, v, retval) 97 register struct proc *p; 98 void *v; 99 register_t *retval; 100{ 101 struct linux_sys_sigaction_args /* { 102 syscallarg(int) signum; 103 syscallarg(const struct linux_old_sigaction *) nsa; 104 syscallarg(struct linux_old_sigaction *) osa; 105 } */ *uap = v; 106 struct linux_old_sigaction nlsa, olsa; 107 struct sigaction nbsa, obsa; 108 int error; 109 110 /* XXX XAX handle switch to RT signal handler */ 111 /* XXX XAX and update emuldata->ps_siginfo. */ 112 113 if (SCARG(uap, nsa)) { 114 error = copyin(SCARG(uap, nsa), &nlsa, sizeof(nlsa)); 115 if (error) 116 return (error); 117 linux_old_to_native_sigaction(&nlsa, &nbsa); 118 } 119 error = sigaction1(p, linux_to_native_sig[SCARG(uap, signum)], 120 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0); 121 if (error) 122 return (error); 123 if (SCARG(uap, osa)) { 124 native_to_linux_old_sigaction(&obsa, &olsa); 125 error = copyout(&olsa, SCARG(uap, osa), sizeof(olsa)); 126 if (error) 127 return (error); 128 } 129 return (0); 130} 131