/*      $OpenBSD: main.c,v 1.1.1.1 2018/04/10 23:00:53 bluhm Exp $      */
/*
 * Copyright (c) 2018 Alexander Bluhm <bluhm@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "header.h"

int
main(int argc, char *argv[])
{
        char *cmd;
        pid_t self;
        int fdpre, fdpost, ret;

        if ((fdpre = open("/dev/null", O_RDONLY)) == -1)
                err(1, "open pre");
        if (pledge("exec stdio proc recvfd rpath sendfd", NULL) == -1)
                err(1, "pledge");
        if ((fdpost = open("/dev/null", O_RDONLY)) == -1)
                err(1, "open post");

        fdops(fdpre, fdpost);

        self = getpid();
        if (asprintf(&cmd, "/usr/bin/fstat -p %d", self) == -1)
                err(1, "asprintf");
        ret = system(cmd);
        switch (ret) {
        case -1:
                err(1, "system");
        case 0:
                break;
        default:
                errx(1, "'%s' failed: %d", cmd, ret);
        }
        free(cmd);

        return 0;
}