1 /* $OpenBSD: pfioctl2.c,v 1.3 2022/02/26 20:14:06 bluhm Exp $ */
2 /*
3 * Copyright (c) 2016 Sebastian Benoit <benno@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <sys/ioctl.h>
21 #include <net/if.h>
22 #include <net/pfvar.h>
23
24 #include <err.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30
31 #define PF_SOCKET "/dev/pf"
32
33 int test_pf_status(int);
34
35 int
test_pf_status(int s)36 test_pf_status(int s)
37 {
38 struct pf_status status;
39 int ret = 0;
40
41 if (ioctl(s, DIOCGETSTATUS, &status) == -1)
42 err(1, "%s: DIOCGETSTATUS", __func__);
43 if (!status.running)
44 warnx("%s: pf is disabled", __func__);
45
46 return (ret);
47 }
48
49
50 int
main(int argc,char * argv[])51 main(int argc, char *argv[])
52 {
53 int s;
54
55 printf("pf ioctl with file opened after pledge fails\n");
56 if (pledge("stdio pf", NULL) == -1)
57 err(1, "pledge");
58
59 /* this fd is not fdpledged, test should fail */
60 if ((s = open(PF_SOCKET, O_RDWR)) == -1) {
61 err(1, "%s: cannot open pf socket", __func__);
62 }
63
64 test_pf_status(s);
65 close(s);
66 exit(0);
67 }
68