1 /* $NetBSD: compat_sigaltstack.c,v 1.1 2005/09/13 01:44:09 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Klaus Klein. 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 #if defined(LIBC_SCCS) && !defined(lint) 41 __RCSID("$NetBSD: compat_sigaltstack.c,v 1.1 2005/09/13 01:44:09 christos Exp $"); 42 #endif /* LIBC_SCCS and not lint */ 43 44 #define __LIBC12_SOURCE__ 45 46 #include <limits.h> 47 #include <signal.h> 48 #include <compat/include/signal.h> 49 #include <stddef.h> 50 51 int 52 sigaltstack(onss, ooss) 53 const struct sigaltstack13 *onss; 54 struct sigaltstack13 *ooss; 55 { 56 stack_t nss, oss; 57 int error; 58 59 nss.ss_sp = onss->ss_sp; 60 nss.ss_size = onss->ss_size; 61 nss.ss_flags = onss->ss_flags; 62 63 error = __sigaltstack14(&nss, &oss); 64 65 if (error == 0 && ooss != NULL) { 66 ooss->ss_sp = oss.ss_sp; 67 if (oss.ss_size > INT_MAX) 68 ooss->ss_size = INT_MAX; 69 else 70 ooss->ss_size = oss.ss_size; 71 ooss->ss_flags = oss.ss_flags; 72 } 73 74 return (error); 75 } 76