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/* $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;
}
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