135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/* $NetBSD: jmptest.c,v 1.2 1995/01/01 20:55:35 jtc Exp $ */
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/*
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* Copyright (c) 1994 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#if (TEST_SETJMP + TEST_U_SETJMP + TEST_SIGSETJMP) != 1
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#error one of TEST_SETJMP, TEST_U_SETJMP, or TEST_SIGSETJMP must be defined
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#endif
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#ifdef TEST_SETJMP
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#define BUF jmp_buf
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#define SET(b, m) setjmp(b)
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#define JMP(b, v) longjmp(b, v)
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#endif
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#ifdef TEST_U_SETJMP
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#define BUF jmp_buf
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#define SET(b, m) _setjmp(b)
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#define JMP(b, v) _longjmp(b, v)
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#endif
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#ifdef TEST_SIGSETJMP
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#define BUF sigjmp_buf
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#define SET(b, m) sigsetjmp(b, m)
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#define JMP(b, v) siglongjmp(b, v)
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#endif
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int expectsignal;
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void
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aborthandler(signo)
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int signo;
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{
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if (expectsignal)
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exit(0);
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else
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errx(1, "kill(SIGABRT) succeeded");
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}
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct sigaction sa;
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BUF jb;
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sigset_t ss;
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int i, x;
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i = getpid();
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#ifdef TEST_SETJMP
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expectsignal = 0;
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#endif
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#ifdef TEST_U_SETJMP
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expectsignal = 1;
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#endif
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#ifdef TEST_SIGSETJMP
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if (argc != 2 ||
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(strcmp(argv[1], "save") && strcmp(argv[1], "nosave"))) {
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fprintf(stderr, "usage: %s [save|nosave]\n", argv[0]);
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exit(1);
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}
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expectsignal = (strcmp(argv[1], "save") != 0);
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#endif
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sa.sa_handler = aborthandler;
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sa.sa_mask = 0;
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sa.sa_flags = 0;
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if (sigaction(SIGABRT, &sa, NULL) == -1)
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err(1, "sigaction failed");
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if (sigemptyset(&ss) == -1)
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err(1, "sigemptyset failed");
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if (sigaddset(&ss, SIGABRT) == -1)
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err(1, "sigaddset failed");
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if (sigprocmask(SIG_BLOCK, &ss, NULL) == -1)
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err(1, "sigprocmask (1) failed");
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x = SET(jb, !expectsignal);
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if (x != 0) {
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if (x != i)
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errx(1, "setjmp returned wrong value");
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kill(i, SIGABRT);
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if (expectsignal)
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errx(1, "kill(SIGABRT) failed");
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else
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exit(0);
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}
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if (sigprocmask(SIG_UNBLOCK, &ss, NULL) == -1)
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err(1, "sigprocmask (2) failed");
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JMP(jb, i);
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errx(1, "jmp failed");
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}
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