/* **********************************************************
 * Copyright (c) 2014-2017 Google, Inc.  All rights reserved.
 * Copyright (c) 2003-2008 VMware, Inc.  All rights reserved.
 * **********************************************************/

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of VMware, Inc. nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * DAMAGE.
 */

/*
 * test of fork with the parent sleeping
 */

#include "tools.h"
#include <sys/types.h>
#include <unistd.h>
#include <sys/types.h> /* for wait and mmap */
#include <sys/wait.h>  /* for wait */
#include <assert.h>
#include <stdio.h>
#include <string.h>

static void
signal_handler(int sig)
{
    if (sig == SIGCHLD)
        print("received SIGCHLD\n");
}

int
main(int argc, char **argv)
{
    pid_t child;
    int rc;
    struct sigaction act;
    act.sa_sigaction = (void (*)(int, siginfo_t *, void *))signal_handler;
    rc = sigfillset(&act.sa_mask);
    ASSERT_NOERR(rc);
    /* set SA_RESTART to test that part of DR code */
    act.sa_flags = SA_SIGINFO | SA_RESTART;
    rc = sigaction(SIGCHLD, &act, NULL);
    ASSERT_NOERR(rc);

    if (find_dynamo_library())
        print("parent is running under DynamoRIO\n");
    else
        print("parent is running natively\n");
    child = fork();
    if (child < 0) {
        perror("ERROR on fork");
    } else if (child > 0) {
        pid_t result;
        /* try to get a SIGCHILD to interrupt the sleep */
        sleep(10000);
        result = waitpid(child, NULL, 0);
        assert(result == child);
        print("child has exited\n");
    } else {
        if (find_dynamo_library())
            print("child is running under DynamoRIO\n");
        else
            print("child is running natively\n");
    }
}