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/* $OpenBSD: pfioctl1.c,v 1.1 2017/01/26 04:58:08 benno Exp $ */
/*
* Copyright (c) 2016 Sebastian Benoit <benoit@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 <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/pfvar.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define PF_SOCKET "/dev/pf"
int test_pf_status(int);
int
test_pf_status(int s)
{
struct pf_status status;
int ret = 0;
if (ioctl(s, DIOCGETSTATUS, &status) == -1)
err(1, "%s: DIOCGETSTATUS", __func__);
if (!status.running)
errx(1, "%s: pf is disabled", __func__);
return (ret);
}
int
main(int argc, char *argv[])
{
int s;
/* a file opened before pledge (!fdpledged) can be used for ioctls */
if ((s = open(PF_SOCKET, O_RDWR)) == -1) {
err(1, "%s: cannot open pf socket", __func__);
}
printf("pf ioctl with file opened before pledge succeeds (1)\n");
test_pf_status(s);
if (pledge("stdio pf", NULL) == -1)
errx(1, "pledge");
printf("pf ioctl with file opened before pledge succeeds (2)\n");
test_pf_status(s);
close(s);
exit(0);
}
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