/*
 * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include <stdio.h>
#include <jni.h>
#include <signal.h>
#include <sys/ucontext.h>
#include <errno.h>
#include <string.h>

static void sig_handler(int sig, siginfo_t *info, ucontext_t *context) {
    printf( " HANDLER (1) " );
}

JNIEXPORT void JNICALL Java_TestPosixSig_changeSigActionFor(JNIEnv *env, jclass klass, jint val) {
    struct sigaction act;
    act.sa_handler = (void (*)())sig_handler;
    sigemptyset(&act.sa_mask);
    act.sa_flags = 0;
    int retval = sigaction(val, &act, 0);
    if (retval != 0) {
        printf("ERROR: failed to set %d signal handler error=%s\n", val, strerror(errno));
    }
}