1 /* $NetBSD: compat_sigaltstack.c,v 1.3 2009/01/11 02:46:26 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 __RCSID("$NetBSD: compat_sigaltstack.c,v 1.3 2009/01/11 02:46:26 christos Exp $"); 35 #endif /* LIBC_SCCS and not lint */ 36 37 #define __LIBC12_SOURCE__ 38 39 #include <limits.h> 40 #include <sys/time.h> 41 #include <compat/sys/time.h> 42 #include <signal.h> 43 #include <compat/include/signal.h> 44 #include <stddef.h> 45 46 int 47 sigaltstack(onss, ooss) 48 const struct sigaltstack13 *onss; 49 struct sigaltstack13 *ooss; 50 { 51 stack_t nss, oss; 52 int error; 53 54 nss.ss_sp = onss->ss_sp; 55 nss.ss_size = onss->ss_size; 56 nss.ss_flags = onss->ss_flags; 57 58 error = __sigaltstack14(&nss, &oss); 59 60 if (error == 0 && ooss != NULL) { 61 ooss->ss_sp = oss.ss_sp; 62 if (oss.ss_size > INT_MAX) 63 ooss->ss_size = INT_MAX; 64 else 65 ooss->ss_size = oss.ss_size; 66 ooss->ss_flags = oss.ss_flags; 67 } 68 69 return (error); 70 } 71